Question

Which of the following points lies on the circle whose center is at the origin and whose radius is 13?

a(-5, 12)
b(squareroot13,squareroot 13 )
c(6, -7)

Answer 1

Not sure why you created a duplicate here.. Did you try the distance formula?

Answer 2

i dont know.. i havent ever done this kind of question....

Answer 3

What is the distance from \((0,0)\) to \((-5,12)\) ?
What is the distance from \((0,0)\) to \((\sqrt{13},\sqrt{13})\) ?
What is the distance from \((0,0)\) to \((6,-7)\) ?

The distance formula between two points is:
\[Distance = \sqrt{(x_2-x_1)^2 + (y_2 - y_1)^2}\]

Answer 4

Where one of the points is \((x_1,y_1)\) and the other point is \((x_2,y_2)\)

Answer 5

soo its the last one? (:

Answer 6

Nope..

\[\sqrt{6^2 + (-7)^2} = \sqrt{36 + 49} = \sqrt{85} \ne 13\]