Question 251333
first find m for 4y-3x+9=0
4y=3x-9
y=3x/4+9/4
m=3/4
perpendicular m=-4/3
y=mx+b
y=-4/3x+b
-7=-4/3(12)x+b
-7=-4*4+b
9=b
y=-4/3x+9