You can put this solution on YOUR website! (5,9),x+4y=5
4y=-x+5
(4y)/(4)=-(x)/(4)+(5)/(4)
y=-(x)/(4)+(5)/(4)
y=mx+b
m=-(1)/(4)
mperp=4
y=mx+b
y=(4)*x+b
y=(4)*(5)+b
(9)=(4)*(5)+b
(4)*(5)+b=(9)
(4)(5)+b=(9)
(4)(5)+b=9
(20)+b=9
b+20=9
b=-11
y=4x-11answer