y=(x/3)+3
so just replace the number under the x column for x in the equation s0
x=-9 equation becomes (-9/3)+3 (-9/3) = -3 +3 = 0
X=-6 (-6/3) +3 = -2+3 = 1
x=-3 (-3/3) +3 = -1+3 = 2
x=3 = (3/3) +3 = 1 +3 = 4
x=6 = (6/3)+3 = 2 + 3 = 5
x=9 = (9/3)+3 = 3+3 = 6