Write an equation of the line that passes through the pair of points ( 1, - 9 ), ( - 8,9 )

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asked Dec 24, 2015 26.2k views

1 Answer

Terrian · Answer 1 · 2015-12-29T18:40:29+0000

To find the slope the coordinates can be inputted into (x2 - x1)/(y2-y1)
(-8-1)/(9+9)
-9/18
-.5
y=-.5x+b
To find b input one of the coordinates into the equation
-9=-.5(1)+b
-9=-.5+b
-8.5=b
The final equation will be
y=-.5x-8.5

Write an equation of the line that passes through the pair of points ( 1, - 9 ), ( - 8,9 )

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