Lines and Planes in Space, Day 2

[@auntymaw-s7i]

Thank you very much

[@vishalsathiaseelan679]

Love this video Ms.Ruddy. thank you very much. 😁

[@lonemaven]

At 7:43 and 9:40, you said "cross product," but you actually mean the "dot product," right?

[@reemsalih4620]

Ya

[@vade248721]

Yea. Haha i totally messed that up too. Happens to the best of us. If only our brains and mouths would sync.

[@РусланКаписъски]

I have an issue on 23:10. You have decided to set x and y to zero, but i have made y and z equal to zero and the distance is different now. My answer is 71/sqt(30) which is completely different asnwet than yours one? I think this could be a problem..

[@sttevve]

you must have made a mistake somewhere, i just did it setting y and z equal to zero, and i got the point (3/2, 0, 0). from there the vector PQ=. the dot product of n and PQ is -30/2+10-1 which becomes -15+10-1 which is -6, the absolute value being 6.