Examples of Math Problems: Write an equation of a circle that has a center (-1,-3) and is tangent to the line 3x+y= -1

Monday, May 27, 2013

Write an equation of a circle that has a center (-1,-3) and is tangent to the line 3x+y= -1

L: 3x+y+1=0 and P: (-1,-3)
The perpendicular distance from L to P is to be the radius:

From the equation of a circle:

%0D%0A%28x%2B1%29%5E2%2B%28y%2B3%29%5E2=5%2F2%0D%0A

%0D%0A%28x%2B1%29%5E2%2B%28y%2B3%29%5E2=5%2F2%0D%0A

:)

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