Parallel and Perpendicular Lines Notes

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OpenerFind the slope of a line passing through the points (2, ­7) and (­6, 5) 

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Parallel and Perpendicular Lines Notes

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Today's Agenda• Unit 6- Coordinate Geometry

Parallel and Perpendicular Lines Notes

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BrainstormWhat comes to mind when you think about graphing lines? 

Parallel and Perpendicular Lines Notes

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RefresherFinding a slope from a graph:

Parallel and Perpendicular Lines Notes

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Finding a slope from two points:Ex. (4, 9) and (­6, 0) 

Write the equation of a line with a slope of 4/5 and a y­intercept of ­8:y = mx + b

Parallel and Perpendicular Lines Notes

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With your groups: Work on #1-4

Parallel and Perpendicular Lines Notes

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With your groups: Work on #5-8

Parallel and Perpendicular Lines Notes

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#9 Graph the line parallel to that passes through point P and writethe equation of the line.

Parallel and Perpendicular Lines Notes

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#10 Are an perpendicular? Why or why not?

Parallel and Perpendicular Lines Notes

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#11 a. Graph the line that passes through (2 , -2) and has a slope -1/3b. Write the equation of the new line.

Can we write this equation in slope-intercept form?

Parallel and Perpendicular Lines Notes

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Point-Slope Formy­y1 = m(x­x1)

line that passes through (2 , -2) and has a slope -1/3

Parallel and Perpendicular Lines Notes

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On your own: #12-13