College Algebra : Lines, Circles, and Piecewise Functions

Study concepts, example questions & explanations for College Algebra

varsity tutors app store varsity tutors android store

Example Questions

Example Question #21 : Lines, Circles, And Piecewise Functions

If (-1,-3)  is a point on a circle with its center at (2,5), what is the radius of the circle?

 

 

Possible Answers:

Cannot be determined

None of these

Correct answer:

Explanation:

We use the distance formula to determine the length of the radius:

Learning Tools by Varsity Tutors