Question 120177
IF THIS IS A LINE EQUATION THEN:
X-Y=7
-Y=-X+7
Y=X-7 
{{{ graph( 300, 300, -6, 10, -10, 10, y = x -7) }}} (graph 300x300 pixels, x from -6 to 10, y from -10 to 10, y = x -7). 
WHEN Y=0 X=7
WHEN Y=-7 X=0