mar4858 mar4858
  • 09-11-2018
  • Mathematics
contestada

Which equation describes this line(1,9) (-2,3)

Which equation describes this line19 23 class=

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parmesanchilliwack parmesanchilliwack
  • 09-04-2019

Answer: The equation describes the line is,

[tex]y-9=2(x-1)[/tex]

Step-by-step explanation:

Since, the equation of a line passes two points [tex](x_,y_1)[/tex] and [tex](x_2,y_2)[/tex] is,

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

Here, the line is passing through the points (1,9) and (-2,3),

The equation of the given line is,

[tex]y-9=\frac{3-9}{-2-1}(x-1)[/tex]

[tex]y-9=\frac{-6}{-3}(x-1)[/tex]

[tex]y-9=2(x-1)[/tex]

⇒ Option D is correct.

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