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Posted by on Monday, October 13, 2008 at 11:48am.

Write the standard form of the equation of the circle that is tangent to the line x=3 and has center at (-2,-7).

Answer: (x+2)^2+(y+7)^2=49

Is this correct?

  • Pre-calculus-check answer please - , Monday, October 13, 2008 at 12:11pm

    did you make a quick sketch?
    should it not be obvious from your sketch, that the radius would be 5 ?

    so the equation should have been:
    (x+2)^2 + (y+7)^2 = 25

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