Jesse E. answered 05/04/20
Experienced tutor for TEAS, chemistry, and biology
This means that you make a table and choose values for x and solve it for y. Usually you will choose negative values, 0, and a few positive values:
X I Y
-2 l 1.33 y = 1/3(-2)2 = 1/3(4) = 1.33
-1 l 0.33 y = 1/3(-1)2 = 1/3(1) = 0.33
0 l 0 y = 1/3(0)2 = 1/3(0) = 0
1 l 0.33 y = 1/3(1)2 = 1/3(1) = 0.33
2 l 1.33 y = 1/3-2)2 = 1/3(4) = 1.33