Question

Let c be any constant number. Which of the following will always be perpendicular to -3x + y = -1?

Answer 1

\[\Large x+3x=c\]

Answer 2

if you have a line: \(\Large y=mx+b\)

a line perpendicular to it will have slope \(\Large -1/m\)

so, the equation would be:\[\Large y = -\frac1m x +c_2\]... where \(\large c_2\) is any constant number