Question

write the equation of a circle whose center is at the origin and contains the point (7,0)

Answer 1

STEP 1: WORK OUT RADIUS

Radius= (square root)(7-0)^2+(0-0)^2

=(sqrt)49

therfore radius=7

This means that the equation of the circle will be x+y=49

Answer 2

Answer:

x^2 + y^2 = 49