|x|-5|-4|-3|-2|-1 |0 |12|
|y|-1 |2|-3| 0| 2|-4|4|3|
(a) For what values of x is y = 2?

(b) For what values of ais y = 5?

(c) For what values of y is a = -1?

(d) For what values of a is y ≤ 0?

(e) What is the minimum value of y?
(e1) At what value of a does it occur?

(f) What is the maximum value of y?
(f1) At what value of a does it occur?