Question 742483: Write an equation for each circle. A circle with center at (-2,-7) and a radius with endpoints (0,7)
Answer by MathLover1(20849)   (Show Source):
You can put this solution on YOUR website! Equation: 
given: center ( , )=( , ), radius with endpoints ( , ); so,  will be the distance between (,) and (,)
| Solved by pluggable solver: Distance Formula |
The first point is (x1,y1). The second point is (x2,y2)
Since the first point is (-2, -7), we can say (x1, y1) = (-2, -7)
So  , 
Since the second point is (0, 7), we can also say (x2, y2) = (0, 7)
So  , 
Put this all together to get: , , , and
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Now use the distance formula to find the distance between the two points (-2, -7) and (0, 7)
 Plug in , , , and
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Answer:
The distance between the two points (-2, -7) and (0, 7) is exactly  units
The approximate distance between the two points is about 14.142135623731 units
So again,
Exact Distance: units
Approximate Distance:  units
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so,  , then
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