caseysanchez855 caseysanchez855
  • 26-03-2020
  • Mathematics
contestada

What is the equation that passes through the point (-4,8) and has a slope of -1/4

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Officialalehpeter
Officialalehpeter Officialalehpeter
  • 26-03-2020

Answer:

y = -x/4 + 7

Step-by-step explanation:

Finding an equation

Given

Slope = -1/4

Point = ( -4 , 8)

Using a point slope form equation

y - y1 = m( x - x1)

( -4 , 8)

x1 = -4

y1 = 8

m = -1/4

Insert the values into the equation

y - 8 = -1/4( x - (-4)

y - 8 = -1/4( x + 4)

Open the bracket

y - 8 = -(x + 4)/4

y - 8 = (-x - 4)/4

y = (-x - 4)/4 + 8

LCM = 4

y = ( -x - 4) + 32 / 4

y = -x - 4 + 32 / 4

y = -x + 28 / 4

Separate to get the slope and the intercept

y = -x/4 + 28/4

y = -x/4 + 7

The equation of the line is

y = -x/4 + 7

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