The graph below shows the price, y, in dollars, of different amounts of granola, x, in pounds: which equation best represents the relationship between x and y? a. y = 8x b. y = x + 4 c. y = 4x d. y = x + 8

Step 1
find two points in the graph
let
A (0,0)
B (2,8)

step  2
find the slope m
m=(y2-y1)/(x2-x1)> m=(8-0)/(2-0)> m=8/2> m=4

step 3
 with m=4 and point A (0,0) find the equation of the line
y-y1=m*(x-x1)> y-0=4*(x-0)> y=4x

the answer is
y=4x

It would be the second one because it passes the vertical line test