## Writing an equation for a line perpendicular and through a point

Writing an equation for a line perpendicular and through a point
• Currently 4.0/5 Stars.
4103 views, 1 rating
Part of video series Forms of Equations
Taught by mrbrianmclogan

### Meets NCTM Standards:

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Writing an equation for a line that is perpendicular to a given line and goes through a given point.
• How do you write an equation for a line that is perpendicular to a given line and goes through a given point?
• How do you find the equation of a line perpendicular to y = 3/8x - 3 that passes through (4, -10)?
• What is the slope of a perpendicular line?
• What is the slope of the line perpendicular to y = 3/8x - 3?
• How do you find the y-intercept of a line if you know the slope and a point?
This lesson shows an example problem of writing an equation for a line that is perpendicular to a given line that passes through a given point. First, the idea of finding the slope of a line perpendicular to a given line is explained. Then, the y-intercept is found for the new line. Unfortunately, the end of the y-intercept calculation is cut off of the screen. But all steps are explained well.
• Currently 4.0/5 Stars.
Reviewed by MathVids Staff on February 11, 2012.