Algebra 1 Section 5.3 Write the equation of a line given 2 points on the line Write the equation of the line that passes through the points (7,4) and (3,12)

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Presentation transcript:

Algebra 1 Section 5.3 Write the equation of a line given 2 points on the line Write the equation of the line that passes through the points (7,4) and (3,12) Write the equation of the line that passes through the points (5,1) and (7,2)

Page 287 example 3

Consider the graph of the equations y = ⅔x – 5 and y = x + 4 Two lines are perpendicular if their slopes are opposite reciprocals. (The slopes products equal -1) Opposite reciprocals -2 ½ 1 -1

Are the lines perpendicular? y = 1/3 x + 5 y = 3x - 7 y = 4/5 x – 7 5x + 4y = 12

Write the equation of the line passing through (5,1) that is perpendicular to y = ½ x + 3

Assignment Page 288 Problems even, 45,46,47,51,52,53,54,70

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