Question 139676
y=.09x+30 (RED LINE)
y=.12x+20  (GREEN LINE)
{{{ graph( 600, 300, -20, 350, -10, 135, .09x +30, .12x +20) }}} (graph 600x300 pixels, x from -20 to 350, y from -10 to 135, of TWO functions .09x +30 and .12x +20).