The graph represents revenue in dollars as a function of greeting cards sold. A coordinate plane showing Greeting Card Revenue, Number of Cards Sold on the x-axis and Revenue in dollars on the y-axis. A line starts at (0. 0) and passes through (2, 8), (4, 16), and ends at (5, 20).

Which equation represents the function shown on the graph?

y = x
y = x
y = 2x
y = 4x

The equation that represents the graph is y=4x.

Step-by-step explanation: If you plug in just one coordinate in each equation, you will find that these are the following outcomes no matter which coordinate you pick(but I'm picking (2,8) for your view):

y=x   ,    8=2

y=x   ,    8=2

y=2x    ,     8=4

y=4x   ,   8=8(ONLY CORRECT STATEMENT)

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

b

step-by-step explanation: