Question

A circle has its center at (-1, 2) and a radius of 3 units. What is the equation of the circle?

Answer 1

hint: \(\bf (x-{\color{brown}{ h}})^2+(y-{\color{blue}{ k}})^2={\color{purple}{ r}}^2

\qquad center\ ({\color{brown}{ h}},{\color{blue}{ k}})\qquad
radius={\color{purple}{ r}}\)

Answer 2

so would it be (x + 1)2 + (y + 2)2 = 9

Answer 3

why not just plug in the values given? :) see what you get

Answer 4

@jdoe0001

Answer 5

There is on mistake in (y+2)²

Answer 6

why not just plug in the values given? :) see what you get

so... plug them in

Answer 7

ok thank you

Answer 8

it was right