Question 157961
(graph = (-4, 3) and (4, -4)
m=(-4-3)/(4+3)=-7/7=-1 is the slope.
Y=mX+b
3=-1*-4+b
3=+4+b
b=3-4
b=-1 is the y intercept of this line.
y=-x-1
{{{ graph( 300, 200, -6, 5, -10, 10, -x -1) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, -x -1).