Question

A circle is drawn on a coordinate plane with the center point at (-4, 5) and a radius of 2. In the standard form of the Pythagorean Theorem, (x-h)^2+(y-k)^2=r^2, which number would replace the variable k? k=_.

Answer 1

k = 5

(Explanation: k is the y-coordinate of the center (−4, 5). The circle equation is (x + 4)^2 + (y − 5)^2 = 4.)