Question

What is the input value other than 0 for which f(x) = -2?

9
8
7-
6
5
4
3
2
1
y = f(20)
-9-8-7-6-5-4-3-2
12
5
89

Answer 1

- 3

Explanation:

locate y = f(x) = - 2 on the y- axis, go horizontally left to meet the graph at (- 3, - 2 ) , then

when input is - 3 the output is - 2