document.write( "Question 123988: Hi. I'm having trouble figuring out this problem here.\r
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document.write( "Discussion
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document.write( "The equation for a circle with center (h,k) and radius r is:\r
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document.write( "The distance between the center of a circle and any point on the circle is
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document.write( "the measure of the radius.  To calculate the distance between two points, use
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document.write( "the distance formula:\r
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document.write( "Solution
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document.write( "You are given the center of the circle as (-3,4) so we know that
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document.write( "h=-3 and 
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document.write( "k=4\r
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document.write( "The circle radius is the distance from (-3,4) to (10, 4).  In this case, you
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document.write( "don't actually have to use the distance formula because the y-coordinates of
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document.write( "the two points are equal and the distance formula degenerates to the square
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document.write( "root of the square of the difference in the x-coordinates.  In other words,
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document.write( "the distance is found by the absolute value of the difference in the
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document.write( "x-coordinates.\r
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document.write( "Now we have sufficient information to write the desired equation:\r
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document.write( "You can simplify and put the equation in standard form, if you like, but unless
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document.write( "instructed to do so, I wouldn't go to all that effort.
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