Question 117233
GRAPHING REQUIRES 2 POINTS OR A POINT & A SLOPE VALUE.
SETTIONG X=0 GETS 1 POINT
Y=-1/2*0+3
Y=3 SO WE HAVE THE POINT (0,3)
NOW SET Y=O
0=-1/2X+3
-1/2X=-3 CROSS MULTIPLY
-X=-6
X=6  SO WE HAVE A SECOND POINT (0,-6)
LOCATING THES 2 POINTS & DRAWING A LINE THROUGH THEM GIVE YOU THE DESIRED LINE.
{{{ graph( 300, 200, -6, 5, -10, 10,  y = -x/2-3) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, y = -x/2-3).