Question 285535
(-8,4) and is perpendicular to the line 
y=-3x+2 (red line)
This line has a slope=-3.
A perpendicular line will have a slope=1/3.
Y=mX+b is the standard line equation where m=slope & b=the Y intercept.
4=1/3*-8+b
4=-8/3+b
b=4+8/3
b=(12+8)/3
b=20/3 the Y intercept.
Y=x/3+20/3 (green line)
{{{ graph( 300, 300, -10, 10, -10, 10, -3x +2, x/3 +20/3) }}} (graph 300x300 pixels, x from -10 to 10, y from -10 to 10, of TWO functions -3x +2 and x/3 +20/3).