Question 240482
slope=-1/2;(-3,4)
Y=mX+b
4=-1/2*-3+b
4=3/2+b
b=4-3/2
b=8/2-3/2
b=5/2=2.5 ans. for the Y intercept.
Y=-X/2+2.5
{{{ graph( 300, 200, -6, 5, -10, 10, -x/2 +2.5) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, -x/2 +2.5).