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Determining Equations of Lines

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Determining Equations of Lines

"work backwards" to find the equation of the line, given the following:I.  slope, y­intercept

II.  point, slope

Example: (given: slope, y­intercept)• Find the equation of the line with slope of 2/3 and the y­intercept of ­1.

­ answer in standard form

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• Find the equation of a line given a slope of ­4 and a y­intercept of ­1, then graph.

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Examples: (given: point, slope)

• Find the equation of the line given a point (3, ­2) on the line, and a slope of ­3/5

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• Find the slope-intercept form of equation where the line with a slope ­1/3 passes through the point (­1, 4)

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• Find the slope-intercept form of equation where the line with a slope ­1/3 passes through the point (­1, 4)

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Exercise 13

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Is (6, 2) on the line given by the equation  2x ­ 3y = 6  ?Example:

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