Question 1134373
Find an equation of the circle:
Tangent to the lines x=1, x=9, y=0
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There are 2 circles.
The centers are on the line equidistant from x=1 and x=9 ---> x = 5
that makes the radii 4 units.
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Tangent to the x-axis puts the centers at (5,4) and (5,-4)