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Find an equation of the circle that satisfies the given conditions. Center (7,-3); tangent to the x-axis.


Answered 6 months ago
Answered 6 months ago
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We know (h,k), we want r.

Since the circle is tangent (it touches the axis in one point only) to the x-axis,

it must contain the point $($7, 0)0).

(sketch if you find this hard to understand).

The radius is the change in the y-coordinates for x=7 (the point above the center).

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