Please help me with this question

Graph C

Explanation:

If you were to plot a point anywhere on said graph. No point's y coordinate, would be the same. The can get infinitely closer together. But never have the same coordinate

PS:

Can I have Brainliest?

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.