Equations of Parallel & Perpendicular Lines

This video involves equations of lines that are parallel or perpendicular to a given line. Topics include: finding the equation of a line given a point on the line and a line that is parallel to it, and finding the equation of a line given a point on the line and a line that is parallel to it. George Woodbury is an author who teaches at College of the Sequoias in Visalia, CA.

Category:

Education

Tags:

• math
• algebra
• elementary algebra
• linear equations
• graphing lines
• lines
• equations of lines
• slope intercept
• point slope
• point slope form
• parallel
• perpendicular
• tutorial

[NYC2261]

I am a little confused, can you please explain a little more. When adding the 9 to both sides, how is 9 the same as 27/3?

[georgewoodbury]

@NYC2261 The integer 9 is the same as the fraction 9/1. If you multiply the numerator and denominator by 3, you'll get 27/3:

9 = 9/1 = 9x3 / 1x3 = 27/3

[stevenb1017]

wow i really was bad at math but now im starting to get the hang of it thank you

[georgewoodbury]

@stevenb1017 Awesome - glad to hear it!

[MissKayleeHayden]

How is 2 the same as 6/3 ???

and how is nine the same as 27/3???

[georgewoodbury]

@MissKayleeHayden 6/3 means 6 divided by 3, which is 2. 27 divided by 3 equals 9.

[OtheglobeStarGoddess]

how did u get -1/7

[go1chase1the1sun1set]

Make another video of the first 3 minutes. Im still confused...far out.

[pandac0ffee]

@georgewoodbury y-2= -1/3x+ 5/3 → y= -1/3x + 11/3 how did you get the 11?

[AndroidSleuth]

Yay! Mathletics makes no sense without your videos :S :D

[marleiin]

yay i get it ! lol :D thank u

[aguirrefam5]

wow I can not beleive that I have a better time understanding how to find the equation of a parallel line and perpindicular line here then from my math teacher who constantly scolds me for asking a question the next day because I did not understand the first time around.