Math function notation

Question

If you knew that f(-4)=8 , then what (x,y) coordinate point must lie on the graph of y=f(x)? Explain your thinking

Answer 1

y = f(x)

Given:

x = -4

f(-4) = 8 ⇒ y = 8

Therefore, the point (-4,8) is on the curve. That is all there is to it.