Question

Which of the following graphs represents a function? choose all that apply.

Answer 1

both answers are functions

Answer 2

Both graph represent functions.

Explanation:

In the image attached we observe a parabola and a line.

Both of them are functions, to deduct that you can apply the vertical test, which is about drawing a vertical line across the functions, if the lines only intercept the curve in one point, that means such curve is a function.

Being said that, you can figure it out that both graph represent a function.

The equation of the parabola is

`y=x^(2) +1`

The equation of the line is

`y=-x`

Therefore, both graph represent functions.