Question

Please, I need more help!

Ronnie plotted the points of an equation on a grid as shown below.
http://i.imgur.com/ley4R.gif


For each value of x, which of the following expressions can be used to find the value of y on the graph?


A. y = 2x + 4

B. y = 1/2x + 2

C. y = 2x - 4

D. y = -4x + 2

Answer 1

C.

Answer 2

y-intercept = -4
==> y = mx - 4
When x = 3, y = 2, m = 2
y = 2x - 4 (C)