ju9lia6Chasarenejone ju9lia6Chasarenejone

11-10-2016
Mathematics

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A line passes through (2, −1)(2, −1) and (4, 5)(4, 5). which answer is the equation of the line? −3x y=17 −3x 5y=−13 −3x y=−7 −3x 5y=13

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nobillionaireNobley nobillionaireNobley

12-10-2016

Equation of a line through two points is given by y - y1 = ((y2 - y1)/(x2 - x1))(x - x1)
y - (-1) = ((5 - (-1))/(4 - 2))(x - 2)
y + 1 = ((5 + 1)/2)(x - 2)
y + 1 = 6/2 (x - 2)
y + 1 = 3(x - 2) = 3x - 6
-3x + y = -6 - 1
-3x + y = -7

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