Meowtwo8889 Meowtwo8889
  • 01-09-2018
  • Mathematics
contestada

Write an equation of the line, in pointslope form, that passes through the two given points. points: (–2, 15), (9, –18)

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tramserran
tramserran tramserran
  • 01-09-2018

Slope (m) = [tex] \frac{y2 - y1}{x2 - x1}  [/tex]

               =  [tex] \frac{15 + 18}{-2 - 9}  [/tex]

               =  [tex] \frac{33}{-11}  [/tex]

               = -3

y - y₁ = m(x - x₁)  ; where (x₁, y₁) is the point and m is the slope

y - 15 = -3(x + 2)

y - 15 = -3x - 6

    y = -3x + 9

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