Question

Point A lies on the circle and has an x-coordinate of 3.

Answer 1

y = √7

Explanation:

This circle has a center at (0,0) and a radius of 4 so its equation is:-

x^2 + y^2 = 16

when x= -3, (-3)^2 + y^2 = 16

9 + y^2 = 16

y^2 = 7

y = √7