Question

Write the standard equation of each circle.
center (0, 3); r =7

Answer 1

\[(x-h)^2+(y-k)^2=r^2\]
that is the equation for a circle

Answer 2

you know it. Now substitute known values.

Answer 3

im confused on where to place the (0,3) in the equation

Answer 4

(h,k) is the centre of the circle.

Answer 5

oh ok

Answer 6

\[(x-0)^2+(y-3)^2=7^2\]
like that?

Answer 7

Yep.

Answer 8

x^2+y^2+9=49 ok so far?

Answer 9

Can be simplified to