Question 843174
y=4x-3
slope is 4
perpendicular slope is -1/4
6=-1/4(-5)+b
6=-5/4+b
6+5/4=b
29/4=b
7 1/4=b
any of three following equations will be the line perpendicular 
y=-1/4x+7 1/4
4y=-x+29
x+4y=29