Work Step by Step
M is always the slope of a line, so you'd have to substititute it for -5. The format of coordinates is (x,y), so the x would have to come first. These don't have to be intercepts, just points that we know the line passes through. So, x is 3 and y is -4. Finally, B is always the y-intercept of a line. Another way to think about b is that it is what y is when x is zero.