Question

The graph represents a functional relationship.

On a coordinate plane, a straight line with a negative slope begins at point (1, 3), crosses the x-axis at (4, 0), and exits the plane at (18, negative 14).

Which value is an input of the function?

–14
–2
0
4

Answer 1

4

Inputs are the x-coordinates. The graph includes the point (4, 0), so 4 is an input (−14 and 0 are y-values, −2 isn't shown).