Question 218501
4y+20=5x
4y=5x-20
y=5x/4-20/4
y=5x/4-5
{{{ graph( 300, 200, -6, 5, -10, 10, 5x/4 -5) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 5x/4 -5).