Question 155622
x/9-y/4=1
(4x-9y)/36=1
4x-9y=36*1
-9y=-4x+36
y=-4x/-9+36/-9
y=4x/9-1/4
{{{ graph( 300, 200, -6, 5, -10, 10, 4x/9 -1/4) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 4x/9 -1/4).