SOLUTION: nathan drew a circle on a grid with a radius of 4 units and the points 2,-1 as its center. What are the pairs of coordinates represented points on the circle
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Question 309265: nathan drew a circle on a grid with a radius of 4 units and the points 2,-1 as its center. What are the pairs of coordinates represented points on the circle Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! nathan drew a circle on a grid with a radius of 4 units and the points 2,-1 as its center. What are the pairs of coordinates represented points on the circle
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Equation:
(x-2)^2 + (y+1)^2 = 16
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Find the x and the y intercept:
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Let x = 0,
then 4 + (y+1)^2 = 16
(y+1)^2= 12
y+1 = +-2sqrt(3)
y = -1+-2sqrt(3)
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Let y = 0
then (x-2)^2 + 1 = 16
(x-2)^2 = 15
x-2 = +-sqrt(15)
x = 2+-sqrt(15)
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Cheers,
Stan H.
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