Question 268789
Y=mX+b
-9=7/8*4+b
-9=-28/8+b
-9=-7/2+b
b=-9-7/2
b=-18/2-7/2
b=-25/2=-12.5 ans. for th Y intercept.
Y=7X/8-12.5 ans.
{{{ graph( 300, 200, -6, 25, -25, 10, 7x/8 -12.5) }}} (graph 300x200 pixels, x from -6 to 25, y from -25 to 10, 7x/8 -12.5).