Question

Help??!!
Look at the graph.

A circle is drawn on the XY coordinate axis, passing through points (-6, 2), (-1, 7), (4, 2) and (-1, -3).

Which equation best represents the circle in the graph?

(x + 1)2 + (y - 2)2 = 25

(x + 1)2 + (y + 2)2 = 25

(x – 1)2 + (y - 2)2 = 25

(x – 1)2 + (y + 2)2 = 25

Answer 1

iThink its c , but im not shur

Answer 2

i will just check it for you

Answer 3

ok [: !

Answer 4

did u check ?

Answer 5

Let's check C by plugging in each point to see if we get true equations

Answer 6

(x – 1)^2 + (y - 2)^2 = 25

(-6 – 1)^2 + (2 - 2)^2 = 25 ... plug in (-6, 2)

(-7)^2 + (0)^2 = 25

49 + 0 = 25

49 = 25

This last equation is FALSE, so (-6,2) does NOT lie on (x – 1)^2 + (y - 2)^2 = 25

Answer 7

oh ok so its not c...iSee

Answer 8

yes C is out

Answer 9

nope i worked it out

Answer 10

i know the right answer

Answer 11

ok so it has to be B ipluged it in and ithink thts it buh im not shur

Answer 12

@jim_thompson5910 isee
wht u did there

Answer 13

try plugging each one in like Thompson suggests

Answer 14

ok great, i'm glad you do, but it's not B

you must've made an error checking B somewhere

Answer 15

@alexwantstolearn that is wht im trying to do

Answer 16

ok
if you want i will quickly put all the coordinate in

Answer 17

if its not B or C then all ihave left is A and D...@alexwantstolearn go right ahead

Answer 18

ok

Answer 19

they have to have a positive and negative coordinate right ?