edyjosue02p97dr4 edyjosue02p97dr4
  • 26-07-2018
  • Mathematics
contestada

Which of the following equations describes the line shown below? Check all that apply. (-2,4) and (-4,-8)

Respuesta :

valetta valetta
  • 04-08-2018

Answer: Equation of line is y = 6x + 16

Explaination:

Given two coordinates (-2,4) and (-4,-8)

We named the points like [tex] x_{1} =-2
[/tex]

[tex] y_{1} =4

x_{2} =-4

y_{2} =-8 [/tex]

We will find the slope of the line

m = [tex] \frac{y_{2}-y_{1}}{x_{2}-x_{1}} [/tex]

m = [tex] \frac{-8-4}{-4+2} [/tex]

m = [tex] \frac{-12}{-2} = 6 [/tex]

now use the point slope form of line :

y − [tex] y_{1} [/tex] = m(x − [tex] x_{1} [/tex])

y - 4 = 6(x + 2)

y = 6x + 12 + 4

y = 6x + 16

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