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1313_section1o2 - Two lines are perpendicular if and only...

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Math 1313 – Section 1.2 1 Math 1313 Section 1.2 Equations (These will not be given on the test. You need to memorize them.) Slope of a line: 1 2 1 2 x x y y m - - = Slope-Intercept Form: b mx y = Point-Slope Form: ) ( 1 1 x x m y y - = - Standard Form: ax + by = c Example 1: Write an equation for the line that has slope 5 1 and passes through (3, -9). Example 2: Write an equation for the line that passes through (-2, 5) and (4, 8).
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Math 1313 – Section 1.2 2 Parallel and Perpendicular Lines Two lines are parallel if and only if their slopes are the same.
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Unformatted text preview: Two lines are perpendicular if and only if their slopes are negative reciprocals of each other. Example 3: Find an equation of the line that passes through the point (-2, 2) and is parallel to the line 2 x – 4 y – 8 = 0. Example 4: Find an equation of the line that passes through the point (-1, -3) and is perpendicular to the line that passes through (3, -4) and (9, -6)....
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