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  • 11-11-2018
  • Mathematics
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what is the equation for this?

what is the equation for this class=

Respuesta :

gmany
gmany gmany
  • 11-11-2018

The point-slope form:

[tex]y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

We have two points (-9, 7) and (9, 1). Substitute:

[tex]m=\dfrac{1-7}{9-(-9)}=\dfrac{-6}{18}=-\dfrac{1}{3}\\\\y-7=-\dfrac{1}{3}(x-(-9))\\\\\boxed{y-7=-\dfrac{1}{3}(x+9)}[/tex]

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