Britneyslore
Britneyslore Britneyslore
  • 04-04-2019
  • Mathematics
contestada

Which of the following are point-slope equations of the line going through (-5,6) and (1,1)?

Which of the following are pointslope equations of the line going through 56 and 11 class=

Respuesta :

gmany
gmany gmany
  • 06-04-2019

Answer:

[tex]A.\ y-6=-\dfrac{5}{6}(x+5)\\\\B.\ y-1=-\dfrac{5}{6}(x-1)[/tex]

Step-by-step explanation:

The point-slope form of an equation of a line:

[tex]y-y_1=m(x-x_1)[/tex]

m - slope

(x₁, y₁) - point

The formula of a slope:

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

We have the points (-5, 6) and (1, 1). Substitute:

[tex]m=\dfrac{1-6}{1-(-5)}=\dfrac{-5}{6}\\\\\text{For point (-5, 6):}\\\\y-6=-\dfrac{5}{6}(x-(-5))\\\\y-6=-\dfrac{5}{6}(x+5)[/tex]

[tex]\text{For point (1, 1):}\\\\y-1=-\dfrac{5}{6}(x-1)[/tex]

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