C) Y=5x+1
This is the answer because when your line is a perpendicular its the negative reciprocal so as you can see the slope of the given is 1/-5 which then you multiply by -1 which gives you 1/5 so you have to do the reciprocal of that which means floor it which gives you 5/1 and you divide that which gives you 5. Since you want the same y-intercept you just plug in 1 as your original equation.
