Question 196403
y=-2x+3
{{{ graph( 300, 200, -6, 5, -10, 10, -2x +3) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, -2x +3). 
You go up 3 on the y axis @ 1.5 on the x axis. (slope=-2 or 3/2=1.5)