Question 244451
The line equation form is Y=mX+b where m=slope & b=Y intercept.
x+y=5
y=-x+5 (red line)
x-y=-6
-y=-x-6
y=x+6 (green line)
{{{ graph( 300, 300, -6, 8, -6, 8, -x +5, x +6) }}} (graph 300x300 pixels, x from -6 to 8, y from -6 to 8, of TWO functions -x +5 and x +6).