Find the area please

D

Step-by-step explanation:

Recall that the area of a triangle is given by:

In this case, the base is x and the height is y. Hence:

We can write the following ratios:

Solve for x and y:

Substitute:

And simplify. Hence:

In conclusion, our answer is D.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value