Hello from MrBillDoesMath!
Answer:
y = x - 7
Discussion:
Let's step through the answers one-by-one:
y/6 = x => multiply both sides by 6
y = 6x
y = kx where k = 6
y/x = 1/2 => multiply both sides by x
y = (1/2) x
y = kx where k = 1/2
y = -0.5x
y = kx where k = -0.5
BUT y = x -7 cannot be written simply as y = kx because of the -7 term.
Thank you,
MrB
