As y increases by 4, x increases by 8. Which equation represents this rate of change?

y + 4 = x + 8.

y - x = 4

Step-by-step explanation:

This is a rate change equation,

When y increases by 4, the equation to represent that is (y + 4).

When x is also increased by 8, the equation is (x + 8)

Since both equation are dependable,

y + 4 = x + 8

We can further simplify this to

y - x = 8 - 4

y - x = 4.