Definitions by Iamweasle

y-y1=m(x-x1) 

It's the Point-Line Slope formula.

Formula: y-y1=m(x-x1)

y-2=3(x-1)
y-2=3(x)+3(1)
y-2=3x-3
y=3x-1

y-y1=m(x-x1) by Iamweasle November 18, 2009