Answer
m=c; b=d
Work Step by Step
We need to put the equation in the form y=mx+b:
$ y-d=cx \\\\ y=cx+d$
In order to figure out what the slope is, we must figure out what x is being multiplied by. x is being multiplied by c, so we know that m, the slope, is c. We now must figure out what is being added to x. d is being added to x, so we know that b, the y intercept, is d.