Question

Which of these equations represent functions where x is the input and y is the output?

Select each answer that applies
A. X=2
B. Y=2
C. Y=2x
D. X=2y
E. X+y=2

Answer 1

everybody, except (a)

Explanation:

`a(x) = ?` Vertical line

`b(x) = 2`

`c(x) = 2x`

`d(x) = x/2`

`e(x) = 2 - x`