A diameter of a circle has endpoints A(-4,2) and B(3,2). Find the center of the circle, radius, and write an equation for the circle.
The center is at the midpoint of AB: (-1/2,2)
the radius is 1/2 the diameter: 7/2
so the equation is
`"(x + 1/2)"^2` + `"(y-2)"^2` = `(7/2)^2`
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