Question 315950
slope=4 thru (1,-1)
Y=mX+b
-1=4*1+b
-1=4+b
b=-1-4
b=-5 ans for the Y intercept.
Y=4X-5 ans.
{{{ graph( 300, 200, -6, 5, -10, 10, 4x -5) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 4x -5).