Question

Give the equation of the circle centered at the origin and passing through the point (0,-8)

Answer 1

Answer:

The answer to your question is x ² + y² = 64

Step-by-step explanation:

Process

1.- Find the length of the radius

C (0, 0)

P (0, -8)

d = $\sqrt{(x2 - x1)^{2}+ (y2 - y1)^{2} }$

d = $\sqrt{(0- 0)^{2}+ (-8 - 0)^{2} }$

d = $\sqrt{64}$

d = 8

2.- Find the equation of the circle

    $(x - h)^{2} + (y - k)^{2} = r^{2}$

h = 0   and k = 0

    $(x - 0)^{2} + (y - 0)^{2} = 8^{2}$

            x² + y² = 64