Question

Graph: 4x^2+4y^2=64

My answer for Domain & Range:
Domain:-4<=x<=4
Range:-4<=y<=4

I need help with the Domain, is my answer correct or is it all real numbers?

Answer 1

http://www.symbolab.com use this !!! it helps with everything for math! thats honestly how ipassed

Answer 2

can't use it during a test so lets go through it >.<

Answer 3

didn't know it was a test. lol.

Answer 4

first things first you can divide both sides by 4

Answer 5

ow no its just when using those websites you don't learn how todo it and then you're good gamed during a test

Answer 6

so divide both sides by 4 to start off because thats the fastest thing todo

Answer 7

the websites explain how to do it, just like we are.

Answer 8

x^2+y^2=16

Answer 9

now we see x^2 and y^2 = 16, your teacher should have taught you when to look for circles and ovals

Answer 10

if not then i don't know how she taught the course, but we find out this is a circle, because the numbers behind x^2 and y^2 are the same (they are 1)

Answer 11

and so the radius of the circle is the square root of what the equation is equal to

Answer 12

so sqrt(16)=4 so this is a 4radius circle at the origin of 0,0

Answer 13

the domain and range are both [-4,4]

Answer 14

so you are correct

Answer 15

Well, I'm homeschooled and I attend online school regulations, lately I haven't been going through all of the steps because of overdue work, but this helped a lot, thanks.

Answer 16

its A