Direct variation: y=kx
Ask ourselves: what is k in this particular relationship? Substitute:
y=kx
11=8k
k=8/11
Two additional values for x and y; we can just throw in random numbers for x and see what y becomes. I'm going to use 11 and 22.
y = (8/11)x
y = (8/11)11
y = 8
(11,8)
y = (8/11)x
y = (8/11)22
y = (8/11)2*11
y = 8*2
y = 16
(22,16)