Question

A circle whose center is at(6,8) passes through the

origin. Which of the following points is NOT on

the circle?

Answer 1

where are the following points, you got options ?

Answer 2

A. (12,0), B(6,-2), C(16,8), D(-2,12), E(-4,8)

Answer 3

I would first write down the equation for this circle.
you know its center, and you can find its radius
then use
(x-x0)^2 + (y-y0)^2 = r^2

then test each of the points in the equation

Answer 4

ahh

Answer 5

distance formula

Answer 6

length is 10

Answer 7

for radius

Answer 8

so diameter is 20

Answer 9

ahh

Answer 10

6-8-10 right triangle?

Answer 11

I was able to make a 6-8-10 right triangle

Answer 12

wait

Answer 13

you got radius = 10

Answer 14

what now?

Answer 15

I got points (0,0),(6,0), and (6,8)

Answer 16

I would just use
(x-6)^2 + (y-8)^2 = 100

one of the pair will not work

Answer 17

just check distance between center and each of the given points

Answer 18

ahh

Answer 19

if u get 10, then that point lies on circle.

Answer 20

so like

Answer 21

ahh

Answer 22

that is what the equation of a circle does

Answer 23

D. does not work

Answer 24

square root of 148 is an incorrect answer

Answer 25

ty