Question

If y(x) = 4x, what is x when y(x) = 4?

2
1
4
0

Answer 1

It should be 1. If y(x)= 4 then x should equal 1. This way we get 4=4 which is true.

Explanation:

4x1 = 4, so if you substitute 1 for x in your equation you get 4.