Question

Circle D has a radius of 3 units with center D at (5, -2). Which graph represents circle D?

Answer 1

circles 1 and 3 are definitely out

Answer 2

ok

Answer 3

i say #2 since center is at (5,-2) and the radius is 3

Answer 4

its the middle circle...

Answer 5

agreed. as for #4, find the midpoint between where the circle crosses the y-axis. and you can see if that's -2 or not.

Answer 6

true, #4 is probably at 5,-2, but i think it is too big.

Answer 7

what is the midpoint of -9.5 and 5.5?

Answer 8

(9.5+5.5 )/2

Answer 9

add the two values and have it

-9.5 + 5.5 = -4 half of -4 = -2

Answer 10

*oops missed typing negative...

Answer 11

so #4 is the right one

Answer 12

but the radius is more than 3

Answer 13

oh yeah. i forgot that detail!

Answer 14

sorry! well, good to understand how to find the center anyway.

Answer 15

that's why the teacher puts multiples that might be right, but there is only one that fits all details :)

true. finding center is useful