# How do you find a standard form equation for the line Perpendicular to the line 7x+y=49; contains the point (7,-1)?

##### 1 Answer

Jun 12, 2016

#### Explanation:

Given lines

their respective slopes

In the given equation, we have

Transform the equation to slope-intercept form to get the slope.

Now, the equation of the perpendicular line will be something like

To get the y-intercept, simply substitute the coordinates of the point which we know to lie on the line

Hence, the equation of the perpendicular line is

or, in standard form