Question

How do you fnd the slope of a line perpendicular to the graph of each equation `y= x/-5 - 7`?

Answer 1

If you have a line with slope equal to `m` the perpendicular will have slope `m_1=-1/m`;

Your line has slope `m=-1/5` (the coefficient of `x`) so the perpendicular will be:
`m_1=-1/(-1/5)=5`