Question

5. Which equation of a circle is represented by the graph?

(Points : 1)
x2 + y2 = 16

(x 1)2 + (y 1)2 = 4

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

(x 1)2 + (y 1)2 = 16
i will atach doc

Answer 1

here is the attachment

Answer 2

D

Answer 3

First, you have to understand the equation of a circle

Answer 4

http://www.mathwarehouse.com/geometry/circle/equation-of-a-circle.php

Answer 5

okay I hought it as the first one because the other ones apeard as lines when entered into my calculalotor

Answer 6

could you help me with a few more?

Answer 7

Ok :)

Answer 8

thank you
1. Which equation of a circle is represented by the graph?

(Points : 1)
x2 + y2 = 16

(x 1)2 + (y 1)2 = 8

x2 + y2 = 8

(x 1)2 + (y 1)2 = 16

Answer 9

i think it is the first one

Answer 10

Yes :)

Answer 11

3. Which of the graphs represents the circle with equation (x + 1)2 + (y 3)2 = 4?
(Points : 1)

Answer 12

Is it (y+3)^2 or (y-3)^2?

Answer 13

the second y-

Answer 14

and the 2's are ^2

Answer 15

this one i think it is the last one but im not o sure if i am right.

Answer 16

D

Answer 17

o cool, this is the last one _
Which is the graph of the circle with equation x2 + y2 = 9?
(Points : 1)

Answer 18

i dont know this one at all

Answer 19

2nd one, I'll teach you how to do these

Answer 20

yes please do lol im lost

Answer 21

x^2+y^2, means the circle's center is at 0,0. Then, the square root of 9 tells you how long the radius is

Answer 22

Do you have any other examples?

Answer 23

These might help me explain to you

Answer 24

not of the circles but I do of ones like these- 1. The circle with equation x2 + y2 = 100 is translated 2 units right and 3 units up. Where is the center of the new circle after the translation?
(Points : 1)
(2, 3)

(3, 2)

(2, 3)

(3, 2)

Answer 25

is that good? or do you need a circle one? if you do you can just use the last one we did i guess.

Answer 26

Yeah, could you give the circle one please? That will help me explain better

Answer 27

. Which equation of a circle is represented by the graph?

(Points : 1)
x2 + y2 = 16

(x 1)2 + (y 1)2 = 4

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

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

Answer 28

Ok, first, identify the center point of the circle

Answer 29

(1,1)?

Answer 30

http://www.mathwarehouse.com/geometry/circle/equation-of-a-circle.php
This site will explain better than i can lol

Answer 31

cool, thank you for this site :)

Answer 32

Your welcome :), it is an easy topic once you start to grasp the general idea of it, it is easier than graphing linear equations!!!

Answer 33

If there is anything you do not understand, I will try to help you

Answer 34

okay thank you so much

Answer 35

Your welcome :)