Question 315602
Find an equation of the line containing the points (-3, 1) and (-1, 3).
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slope = (3-1)/(-1--3) = 2/2 = 1
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Form: y = mx + b
You know m = 1 and y = 1 when x = -3 ; solve for "b":
1 = 1*-3 + b
b = 4
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Equation:
y = x + 4
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Cheers,
Stan H.