Perpendicular Linear Functions

This video is for the redesigned SAT which is for you if you are taking the SAT in March 2016 and beyond.

Perpendicular Linear Functions
Example:
f(x) = 3x + 1, and g(x) is a linear function that is perpendicular to f(x). If (3,0) is a point of g(x), at what point do f(x) and g(x) intersect?

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