# What is the equation of a line that is perpendicular to the line represented by #2x-y = 7#?

##### 1 Answer

Mar 23, 2017

You need to define a point through which they both pass.

#### Explanation:

You have

This becomes

When 2 lines are perpendicular, the product of their slopes is

So, let the slope of the required line be

We have

In this question, we don't have enough information to calculate the y-intercept, so I'll leave it at

where