Question 245675
Y=mX+b
2y=4x-6
y=4x/2-6/2
y=2x-3 (red line)
5=2*2+b
5=4+b
b=5-4
b=1
y=2x+1 (green line)
{{{ graph( 300, 200, -6, 5, -10, 10, 2x -3, 2x +1) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions 2x -3 and 2x +1).