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January 31, 2015

January 31, 2015

Posted by **nyl** on Sunday, April 22, 2012 at 7:26am.

- geometry -
**MathMate**, Sunday, April 22, 2012 at 9:51amIf a circle is tangent to both axes, then its centre lies along the line

y=x (for circle in first or third quadrant) or

y=-x (for circle in second or fourth quadrant).

Make your choice of quadrant(s) and solve the system of equations

3x+y=6

y=x

or

3x+y=6

y=-x

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