Graphing 24 - parallel and perpendicular lines 2

Graphing 24 - parallel and perpendicular lines 2
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Part of video series Graphing Lines
Taught by YourMathGal

Meets NCTM Standards:

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
At 8:20 of the video, there is an error: line #3 should be y = -3/2x - 6 because you need to find the opposite reciprocal.
Covers writing equations of lines parallel or perpendicular to a given line if you know a point on the line. This is part 24 of a series of videos about graphing lines.
• Extra Practice - Extra practice problems for writing equations for lines including parallel and perpendicular lines.
• How do you write the equation of the line parallel to the line y = 2x - 4 that passes through (-6, -1)?
• How do you write the equation of a line in slope-intercept form that has a given slope and passes through a given point using point-slope form?
• How do you write the equation of the line perpendicular to the line y = 2x - 4 that passes through (-6, -1)?
• How can you find the slope of a line parallel or perpendicular to a given line?
• How do you write the equation of the line passing through (0, -6) with a slope of 5?
• How do you write the equation of the line parallel to y = 4x + 3 passing through (0, -6)?
• How do you write the equation of the line perpendicular to y = 2/3x - 7 passing through (0, -6)?
• Are the lines y = 3x - 4 and 3x - y = 8 parallel, perpendicular, or neither?
• Are the lines y = 2/3x + 5 and y = 3/2x - 1 parallel, perpendicular, or neither?
• Are the lines y = 2x - 3 and y = -1/2x - 3 parallel, perpendicular, or neither?
• How do you re-write an equation in standard form in slope-intercept form?
This video takes the ideas we learned from the previous lesson and uses these skills to find equations of line parallel or perpendicular to other equations of lines that pass through a given point. Make sure you are confident in your ability to write equations for lines before watching this video.
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Reviewed by MathVids Staff on January 16, 2010.