help meh plssssssssssss i don't understand

Step-by-step explanation:
i solved it see it i hope it is good
Answer:
a)
X = -3 , y = 0
x = -2 , y = 8
x = -1, y = 6
x = 0 , y = 0
x = 1 , y = -4
x = 2 , y = 0
x = 3 , y = 18
b)
x = 0 or 2
when x is equal to 2 or 0, y = 0.
(not sure about part be. But the equation will be true if x is equal to 2 or 0).