What is the input if the output is -6?

Answer:
x=0,8
Step-by-step explanation:
We want to find the values of x when y = -6
There are two different values of x that give y = -6
The first is x=0
When f(0) = -6
The second is x=8
f(8) = -6
Answer:
0 or 8
Step-by-step explanation:
The output is -6
output = y
input = x
When y = -6, x = 0 or x = 8 (as shown in the graph).