Question 43348
Since you do not give an example, i'll give you one to use as an example...
let's say you are given 
m = 2/3 and the point (6, -8)
we plug into the point-slope form
y - y1 = m(x - x1)
y + 8 = (2/3)(x - 6)
then conver to y = mx + b form by solving for y...
y + 8 = (2/3)x - 4
y = (2/3)x - 12