exam Maths Puzzle Numerical Ability

The equation below is a circle. What is the y-coordinate of the center of the circle?

(x - 6)^2 + (y + 5)^2 = 15^2

my initial awnser was 5 but i was wrong

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exam Other Question

Describe in words the graph of this curve below. Include in your description the shape, along with other possible relevant information such as length, width, and center points. Thanks!

(X-1)2 + (Y-8)2 = 16
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