Question 159955
m=4, (5,2)
Y=mX+b
2=4*5+b
2=20+b
b=2-20
b=-18
Y=4x-18
{{{ graph( 300, 200, -6, 5, -20, 10, 4x -18) }}} (graph 300x200 pixels, x from -6 to 5, y from -20 to 10, 4x -18).