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A circle with a radius of 4 lies on the coordinate plane with a center of X (2, -3). If all but 1 of the following points were to fit on the circle, which one would be excluded?

rose085

by rose085 at January 01, 2011

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Rose -The first step is to take the words and put them into an equation for a circle.  In your math book or taught by your teacher in class, you should have learned that the equation for a circle is:Where (h,k) is the "center" of the circle and r is the radius.Plugging in the information for the problem:Now, to answer the question, just replace the x and y in this equation with points you were given and if the answer equals 16, then it does fit on the circle.  If it does not equal 16, then it does not fit on the circle.Hope that helps

Steve204 Steve204 January 01, 2011

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