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?

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

ratio is 2 : 9

the answer is three

13.5 : 3

x= -8

step-by-step explanation: