Finding the slope of a line from its graph | Algebra I | Khan Academy

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Slope of a line
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Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.
About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything.
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its not just you I have that problem also

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heroes*

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Spidermam

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1 job in a thousand

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Dan Borja elementary-....

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why some teacher are so bad , this is unbelievable.

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Habituated Abnormality exactly

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My teacher just gives us notes, then gives us a worksheet with 90 questions due the next day...The 90 question worksheet had nothing to due with what the notes were about either

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[@speediablo]

When my teacher explains, F- When you explain: A+

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Why is this so true

[@melithegamer1271]

I am confused any suggestions 🤔

[@speediablo]

@@melithegamer1271 The slope of a line isn’t too hard, all you need is two points and the formula: Y2-Y1 divided by X2-X1. X2 and Y2 are the points of whichever set you want to choose first. For instance, if you have (1,2) [where X2=1 and Y2=2], and you have (-2,4) [where X1=-2 and Y1=4], then you plug the points in like so: 2-4 divided by 1+2. This would simplify to -2/3 as your slope

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What's an F-

[@logotho7340]

Algebra is cancer, but this made it slightly less so. Thanks mate

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@KingOFWeird correct

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@mokeycooch I think most of us are like 8th graders in 8th grade this is just regular algebra

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Thank you, you really helped me, thumbs up if this helped you

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p.s. i would thumbs up, but im on mobile.

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Thanks man! i needed to know how to do this, i was confused in math class..

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me too

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Thank you so much for this video because GOD knows that I never understood this when my teacher was teaching it this week. On top of all of this my teacher gave us three papers to do over the weekend (sense it is Friday today) and is due Tuesday sense we do not go to school this Monday, so thank you.

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Since*

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[@qotyop]

An increasing line(such as in this example) will always have a positive slope(whether you take a higher starting point or lower, it doesn't matter) Whereas, a decreasing line will always have a negative slope(because as x values increase, the y-values decrease, thus making the change in x +ve and change in y -ve, and taking this ratio will fetch you a -ve slope)

[@qotyop]

@Abigail Johnson what?

[@ql5481]

So if the line goes up on the right side its increasing and has a positive sign but if the line goes up in the left side its decreasing and has a negative sign right

[@doobas2171]

@@ql5481 we read graphs from left to right so in your second example it would be going from the 2nd quadrant (top left) and down to the fourth quadrant (bottom right)

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im a 7th grader, but my 8th grade friend is in Algebra I and wasn't understanding his lesson. So i just had to teach myself (thanks to this videooo) in order to help my friend out with it. Thank god this video exists.

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Well, aren't you a nice friend to have.

[@Cgrrr28]

I’ve got a test today and I have no idea how to calculate slope but now after watching this video I think I’m ready!

[@madzzextra8032]

did u fail?

[@anil-1174]

Perfect 👍 also add .....slope of a straight line is the same at every point on the line ...but when it comes to a curve it changes

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hello person from 7 years ago

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I just learnt more math than I did in the whole of last year

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maybe try English next

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I really wish I had this video when I was trying to learn this in college. I didn't understand it at all but now after this 4 min video Its pretty easy.

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The fact that I'm in 6th grade and wanting to know this is word I'm a nerd ok...

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@Abigail Johnson 9th grade is hard lol this is exactly what we're learning

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How's 7th grade been going for ya

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lol i’m in 7th now too

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@@keyahrichards3083lucky, I’m learning this in the beginning of 8th

[@DanikasAsmr]

My teacher made this very complicated for me. Watching just one 5 min KZbin video helped me solve the immense stress I felt trying to find slope

[@TheMarjer143]

Ohhhhhhhhhhh! 😮 The only thing I was having trouble with was the graph, THANK YOU FOR MAKING IT CLEARER

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Tysm i have a test today and my math teacher explained it in a way i just couldn’t understand but you did in 4 mins

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this may look boring but it's fun and understandable well that from my point of view because I homeschool

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mr khan (lol)

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[@ravioli3939]

I understand it way better with him then my actual math teacher I literally had a breakdown a minute ago cuz I didn’t understand it and I was crying so I looked it up and I feel so dumb cuz this is actually easy but my teacher makes it seem way harder than what it is

[@tylerj8231]

Thank you so much for this video, in my algebra 1 class we had a homework assignment I completely bombed that you had to find the slope of a line for... We hadn't done anything like this and I had no idea what to do, but this video helped me a lot!

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You explained this in an easier and way faster way than the videos my teacher has given me this year. 10/10, did an amazing job explaining everything just as you always do. Keep up the awesome work.

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Thank you i missed a day and this really helped!

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5 grade never thought I would need this

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Are you in college?

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When you learn from more from youtube then 4 semesters of school.

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Facts

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It's cause you don't pay attention in school buddy, here you are willing to learn cause you have hw or an exam.

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hello, person from 9 years ago!

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aaa tysm!! this is way better to understand than my 45min lecture in math

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Failing school anyone? Or just me

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This is so great, especially the quadratic problems, really needed to brush up for a super important test..this is so great....if I had this guy in high school instead of my stupid teacher who just cared about all his students knowing the correct terminology in math instead of caring if his students got the right answers.....I would have been happen to save myself tons of hours of tutoring in college & years in math....my high school teacher he made it so hard, whereas my next teacher made it that particular part so easy, it was crazy...cuz she didnt care if all I knew was the terminology. She made sure her students knew how to get the right answer, by knowing all the steps & how to check your answers yourself

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*Salute you sir*

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Thanks so much dude I really appreciated this I’m struggling in 7th grade math and you made it much easier for me

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hi

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really helped me out thx man for doing this video:)

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Thanks for your help!

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FOR 2 WEEKS I WAS TRYING T GET THIS THANKSSSSSSSSSSSSS

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This was helpful!

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Thank you I got a full grade

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It took 4 minutes to teach what my teacher couldn’t in a week, my education has been horrible ever since I changed schools, thanks a ton

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I want to learn

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thank you so much for this video, this is really help and i also have a test tomorrow. thank you.

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How does my teacher spend the whole quarter trying to teach me this, and u taught me it in 2 minutes 25 seconds 💀💀

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Thank you so much you helped me with my homework

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This is so easy and yet on a test this stressed me out

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I DONT GET IT!

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wh

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who's here because they have online school and it has soooooo many tests

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You make this so easy just by explaining it by words. Thank You so much!!!

[@ahmedzoghbor]

how do you know what point to start with y or x plze help me!!

[@heyitsme6354]

It doesn't really matter what point you start with whether it be with x or y as long as you know which point is x and which point is y. If you pick a certain way you might end up with negative numbers or in another way you might end up with positive numbers. Just simplify it and if you get two negative number divide them by -1 and BABBBBOOOMMM!!! You have solved your problem Good Luck 😂👌🏻

[@RAVIOLIdS]

its the (x) exsasis is the horizontal line and the y is the vertical line

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thx! you're a life saver. this slope stuff is on my test and u made it easier 2 understand.

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im from 2020

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Your style of explaining is awesome.

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True

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Dude this is MATH not memes

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I'm trying to study

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Thank you for this, it helped me out greatly.

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hahha my teacher is stupid also my name is emma

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🙋

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lol

[@zar3045]

Explained very well and made it really easy to understand. I like how you you showed all sides because that was throwing me off with other videos I watched! Thank you!!!!

[@Anthonyxy.]

This is boring asf

[@zoes3063]

That's math for you! Whats new, atleast you learned something.

[@Anthonyxy.]

Pepe Is Love, Pepe Is Life true

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Try listening to it with 0.5 speed.. sounds hilarious

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why are u here then? shoo

[@rosagandara5393]

Thankyou for the clear teaching model 💜 Some educators need to watch your video 👌 keeping it simple 👌💕

[@sai-gn7kg]

So, after finding the slope, you would put the vertical over the horizontal measurements?

[@rockinggirl0610]

Yep or easier to remember: rise/run

[@marthahung9328]

thanks so so much, i finally understood it

[@josepinero9288]

thank you that really helped me because i was confused ur the best

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very well explained sir very good explanation you covered a whole topic in 4 minutes

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Really helps!!!

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I seriously learned this in seconds ....in math class it seemed more complicated

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The teacher, whoever it is, in this channel, is JUST AWESOME !!!!!

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omgggg THIS SI SO UNDERRATED THSI IS THE TEACHIGN WE DESERVE

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The video was very helpful, sir . I have clearly understood it.

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Thank you so much I was in the middle of math homework and I got stuck. This helped me a lot.

[@victorialester1880]

This guy is so good. Can't believe i didn't know this for the past 20yrs cos of how confused we were been taught

[@shortiilove212]

Wow thanks a lot ... out of all videos I’ve watched this one helps me understand so much better ❤️

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Oh my gosh thank you! My teacher confused my entire class so much with this today and now I'm not going to fail!!

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I have an assessment for an entire module tomorrow and this guy fr saved me

[@Steamy_Ravioli567]

Thanks so much this helped me a lot.

[@bambi6600]

I have a math test tomorrow, and this helped me understand Slope a lot better!

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How did your math test go? LMAOO

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thank you so much! I was absent at my school and I was really struggling not knowing on what was going on. This video really helped, thanks once again!

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we do NOT care bro 😭