Question

(50 POINTS!)

A line with a slope of 2 passes through (3,9). Which choice is an equation of this line?

A. y − 3 = 2(x − 9)
B. y + 9 = 2x + 3
C. y − 9 = 2(x − 3)
D. y - 9 = 2x - 3

Answer 1

All you need to do is plug in (3,9) to see which equation holds. And you will find

C. y - 9 = 2(x-3)

is the only one that works.