Question

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Answer 1

for question number 1
equation of a circle is (x - h)^2 + (y - k)^2 = r^2
when point (h, k) is the center.
so when (-1, -5) is the center
plug in -1 for h and -5 for k and 6 for r
into (x - h)^2 + (y - k)^2 = r^2