find an equation of the line that is parellel to the line y=-4x+3 and that passes throught the point (-1,-8) HELP!!

The equation of a line of a given slope m that passes through a given point P0(x0,y0) is given by:

(y-y0)=m(x-x0)
Here the line y=-4x+3 and all lines parallel to it have a slope of -4, and the point P0 is (-1,-8).
Find the line and post your answer for checking if you wish.