Question

A circle has a center at (12,−1)
and a radius of 10 units.

Which point is on the circle?

(2 points)

(0,2)


(5,4)


(4,5)


(15,8)

Answer 1

Equation: (x − 12)^2 + (y + 1)^2 = 10^2 = 100.

Check (4,5): (4−12)^2 + (5+1)^2 = (−8)^2 + 6^2 = 64 + 36 = 100.

So (4, 5) is on the circle.