text: y=mx+b \nm is the slope \nb is the y-intercept \nor\ny-y1=m(x-x1) \nplug the coordinates in for y1 and x1 and if you have to 2 coordinates do \nm=y2-y1/ x2-x1      \n     to get the slope and plug it in for x then change itno slope interecpt form y=mx+b\ngood luck