Question

Consider a circle centered at C(-2,-4). If the point P(1,-1) lies on the circle, then which of the following points also lies on the circle?

A. (-2, -√18)

B. (-2+√18, -4)

C. (√18, -4)

D. (-2, 4+√18)

Answer 1

Consider a circle centered at C(-2,-4). If the point P(1,-1) lies on the circle, then which of the following points also lies on the circle?

A. (-2, -√18)

B. (-2+√18, -4)

C. (√18, -4)

D. (-2, 4+√18)

Explanation:

• If the distance is greater than the radius, the point lies outside. If it's equal to the radius, the point lies on the circle. And if it's less than the radius, you guessed it right, the point will lie inside the circle.

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