Mastering SAT Math: From Hard Problems to High Scores - Desmos Edition

[@RisetotheEquation]

Alternate approach to Problem 5: line 1: f(x)=|59-2x| (note: you can use do shift + \ instead of abs() ) line 2: k=59/5 (testing first answer choice) line 3: (k,3k) (the point is on the graph, so it's the answer).

[@nparvinaa]

How we should identify when to use regression ?

[@stemtutor365]

You can only use regression if both the following conditions are met: 1. You are given two points as coordinates. You have to make a table with x1 and y1 values from those points 2. You know what type of graph and the general equation of the graph. For example, if it is a linear graph (line), equation would be y1=m*x1+b or for exponential graph, the equation would be y1 = a*(1+r)^x1 (compounding) or y1=a*2^(b*x1) (doubling of population).