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Write an equation for a diameter has end points (-10,1) and (-8,5)
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Write an equation for a diameter has end points (-10,1) and (-8,5)

User John Lawrence
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1 Answer

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The slope of this diameter (line) is

5 - 1
m = ------------ = 4/2 = 2
-8-(-10)

Using the slope-intercept formula:

y = mx + b => 5 = (2)(-8) + b, or 5 + 16 = b = 21

Then the equation of the diameter (line) is y = 2x + 21.
User RagingSloth
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