30 points! Please help!!
What is the input value for which f(x)=3?

Answer:
The input value is -3
Step-by-step explanation:
In the diagram above, it is given that y = f(x). The question ask us to find the value of input which is x value when f(x) = 3 :
f(x) = 3
y = 3
By looking at the graph,
When y = 3,
x = -3
The input value is 3
y=f(x)
The question ask us to find the value of input which is x value when f(x)=3