Question

Write a linear function for the line represented by the point-slope equation

y −4 = 3 (x − 4)
Must show your work to receive full credit.

Answer 1

f(x) = 3x-8

Explanation:

y −4 = 3 (x − 4)

We want to write the equation in y = mx+ b form

Distribute the 3

y-4 = 3x -3*4

y-4 = 3x -12

Add 4 to each side

y -4+4 = 3x-12+4

y = 3x-8

Since the want it in function form, f(x)

f(x) = 3x-8