Question

pre cal

Answer 1

@AZ

Answer 2

Look at the image. What's the center of the circle? What's the radius?

Remember the standard form equation for a circle is

\( (x-\color{red}{h})^2 + (y-\color{blue}{k})^2 = \color{salmon}{r}^2\)

where \((\color{red}{h},\color{blue}{k})\) is the center and \(\color{salmon}{r}\) is the radius

Answer 3

(-3,-1) is the center?

Answer 4

im not sure what the radius is

Answer 5

yes, that is the center!

Answer 6

just count the number of blocks from the center to the edge of the circle

Answer 7

3 blocks?

Answer 8

so the radius is 3

and now all you have to do is plug in those numbers into the equation

Answer 9

careful there

remember that the center is (negative 3, negative 1)

so

x - (-3) becomes x+3

similarly,

y - (-1) would become what?

Answer 10

+1

Answer 11

exactly, it would become y+1

and you got it!