Change x-2y=8 to y=mx+b

To answer the question above, transpose x to the right hand side of the equation,

-2y = - x + 8

Since it is desired to free y of any numerical coefficients, divide both sides of the equation by - 2 giving,

y = (1/2) x - 4

Thus, the obtained equation is the answer with m and b equal to 1/2 and - 4, respectively.