The first thing we must do for this case is to observe the value of the y coordinate for a given value of the x coordinate.
We have then:
f (x) = - 4: occurs when x = 0
On the other hand, for x = 2 we have:
f (2) = - 2
Answer:
f (x) = - 4: occurs when x = 0
f (2) = - 2