Question 995707
Find all points (4,y) that are 10 units from the point (-2, -1). 
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That would be points (4,y) on a circle with center at (-2,-1) and radius = 10
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Circle::  (x+2)^2 + (y+1)^2  = 100
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Solve for y if x = 4
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6^2 + (y+1)^2 = 100
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(y+1)^2 = 64
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y+1 = 8 or y+1 = -8
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y = 7 or y = -9
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Cheers,
Stan H.
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