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Objective - To write equations of parallel and perpendicular lines.

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Presentation on theme: "Objective - To write equations of parallel and perpendicular lines."— Presentation transcript:

1 Objective - To write equations of parallel and perpendicular lines.
Graph the following on the coordinate plane. y x Parallel lines have the same slope.

2 Write the equation of the line in slope-intercept form
that is parallel to y = -2x - 9 and contains (4, -3).

3 Find the equation of a line in standard form that
is parallel to 3x - 5y = 10 and contains (-2,6). (-2,6) 3x - 5y = 10 -3x x -5y = -3x + 10 or

4 Perpendicular lines have slopes that are
Graph the following on the coordinate plane. y x Lines appear perpendicular Perpendicular lines have slopes that are opposite reciprocals

5 Find the following: Opposite Reciprocal Number Opposite Reciprocal 3 0.2 -8

6 Find the equation of a line in standard form that
is perpendicular to 4y - x = 6 and contains (2,5). 4y - x = 6 (2,5) +x +x 4y = x + 6

7 Determine whether the slopes are perpendicular.
1) Yes, perpendicular. 2) No, not perpendicular. 3) Yes, perpendicular.

8 Find the equation of a line in standard form that is
perpendicular to 3x + 5y = 7 and contains (-4,-8). (-4,-8) 3x + 5y = 7 -3x x 5y = -3x + 7 or


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