We have been given a graph in which a line is plotted and it is clear the values of x and the corresponding value of y for each x.
Part A
f(-3) = ?
Here, we have to find out the value of the function (i.e. y) for x = -3.
We can see that when x = -3 the line is passing by the x-axis. Hence, the value of y here is 0.
So f(-3) = 0.
Part B
Solve f(x) = -1
Now, we need to determine for what value x is the function (i.e. y = -1).
We can see that when y = -1, the x-coordinate for the line is -2.
Hence, x = -2
