wnoe2004 wnoe2004
  • 03-04-2020
  • Mathematics
contestada

Write the equation of a line whose slope is -2 and goes through the point (1,-1)

Respuesta :

andreamoss andreamoss
  • 03-04-2020

Answer:

y= -2x+1

Step-by-step explanation:

y=mx+b

Substitute the ordered pairs into the equation

So:

y= -1   m(slope) = -2  x=1   b=?

-1 = (-2)(1) + b

-1 = -2 +b  add 2  on both sides to get b by itself

-1 +2 = b

b=1  

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