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Parallel Lines: Use slope-intercept form to determine whether the lines are parallel. 1. Write equations of parallel lines. 2. Write an equation of a line that ... – PowerPoint PPT presentation

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Title: Parallel Lines:


1
Parallel Lines Use slope-intercept form to
determine whether the lines are
parallel. 1. Write equations of
parallel lines. 2. Write an equation of a line
that contains ( 5 , 1 ) and is parallel to
Have the same slopes and different y-intercepts.
SLOPES ARE THE SAME!!
2
Perpendicular Lines 3. Write an equation of
a line that contains ( 0 , -2 ) and is
perpendicular to y 5x 3. Tell whether
the lines are parallel, perpendicular, or
neither. 4. 5.
Intersect at 90º angles. Their SLOPES ARE
OPPOSITE RECIPROCALS!
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