The slope of a perpendicular line is the opposite reciprocal
so the slope, 6, will become -1/6
to find the perpendicular equation to another line, you need to find the inverse. (Basically, switch the x and y around and solve for y)
f(x)=6x+5
y=6x+5
x=6y+5
x-5=6y
y=(x-5)/6
f⁻¹(x)=(1/6)x-(5/6) the bolded number is the new, perpendicular slope! ^^
-45/7
-7/7
-4/7
0/7
6/7
9/7