Writing Equations of Lines

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Presentation transcript:

Writing Equations of Lines

Write the equation in slope-intercept form. 1. The slope is 4; the y-intercept is -8. 2. The slope is 0; the y-intercept is 7. 3. The slope is -2; the y-intercept is 0. 4. The slope is undefined; the x-intercept is -6.

Write an equation in slope intercept form that passes through the following points (3, -2), (5, 4) (2, 17), (-1, -1) (-2, -1), (4, -4) (-1, 7), (5, 7) (3, 7), (3, 12)

Parallel Lines What do you know about the slope of parallel lines? Parallel lines have the _____ slope. What is the slope of the line parallel to y = -2x + 4? m = y = 3/2x – 4?

Perpendicular Lines What do you know about the slope of perpendicular lines? Perpendicular lines have slopes that are _____ _______. What is the slope of the line perpendicular to y = -2x + 4? m = y = 3/4x – 5?

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