High School

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The graph represents revenue in dollars as a function of greeting cards sold.

A coordinate plane shows Greeting Card Revenue with the 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?

A. [tex]y = x[/tex]
B. [tex]y = x[/tex]
C. [tex]y = 2x[/tex]
D. [tex]y = 4x[/tex]

Answer :

The equation that represents the function shown on the graph is (d) y = 4x

How to determine the equation of the function?

The graph that completes the question is added as an attachment

On the graph, we have the following ordered pairs

Line starts at (0. 0) and through (2, 8), (4, 16), then end at (5, 20)

These ordered pairs are

(x, y) = (0. 0), (2, 8), (4, 16), (5, 20)

The ordered pair (0, 0) implies that the line passes through the origin

This means that the equation can be represented as

y = Y/X * x

Where

(X, Y) = any of (2, 8), (4, 16), (5, 20)

So, we have

y = 8/2 * x

Evaluate the quotient

y = 4 * x

This gives

y = 4x

Hence, the equation is (d) y = 4x

Read more about linear equation at

https://brainly.com/question/13738662

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