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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, y­inte...
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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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Nov 20 Determining Equations Of Lines

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Nov 20 Determining Equations Of Lines

  1. 1. 1 Determining Equations of Lines
  2. 2. 2 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
  3. 3. 3 • Find the equation of a line given a slope of ­4 and a y­intercept of ­1,  then graph.
  4. 4. 4 Examples: (given: point, slope) • Find the equation of the line given a point (3, ­2) on the line, and a slope of ­3/5
  5. 5. 5 • Find the slope-intercept form of equation where the line with a slope ­1/3 passes through the point (­1, 4)
  6. 6. 6 • Find the slope-intercept form of equation where the line with a slope ­1/3 passes through the point (­1, 4)
  7. 7. 7 Exercise 13
  8. 8. 8 Is (6, 2) on the line given by the equation  2x ­ 3y = 6  ? Example:
  9. 9. 9
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