jlevi4984 jlevi4984
  • 21-09-2020
  • Mathematics
contestada

What is an equation of the line that passes through the points (-2, -5)(−2,−5) and (-1, 1)(−1,1)?

Respuesta :

jimrgrant1 jimrgrant1
  • 21-09-2020

Answer:

y = 6x + 7

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

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

with (x₁, y₁ ) = )- 2, - 5) and (x₂, y₂ ) = (- 1, 1)

m = [tex]\frac{1+5}{-1+2}[/tex] = 6 , thus

y = 6x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 1, 1 ) , then

1 = - 6 + c ⇒ c = 1 + 6 = 7

y = 6x + 7 ← equation of line

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