For this case, what you should do is observe in the graph the value of the function when x = -4.
The value of the function is observed when looking at the vertical axis.
Remember that in a function of the form y = f (x) we have:
x: independent variable
y: dependent variable.
Therefore, for x = -4 we have:
f (-4) = 4
Answer:
The value of the function evaluated at x = -4 is given by:
f (-4) = 4
