Question

I need help with graphs and functions..algebra 2

Answer 1

And also, determine if y is a function to x.

x^2 = 3y + y

Answer 2

@amistre64

Answer 3

@ganeshie8

Answer 4

which q you stuck wid ? :)

Answer 5

29 and 30! And sorry is the picture up side down?

Answer 6

its okay :)
look at the curve in pic 29, it is starting at 0, and going up forever..
so its range is : x >= 0

Answer 7

wat do you knw about its domain ?

Answer 8

it's infinite?

Answer 9

kindof yes :)

for domain, you look left and right of curve, its goin forever in both directions.
so domain is : all real numbers

Answer 10

basically we don this :-
for range, look \(\text{up and down}\) of the curve
for domain, look \(\text{look left and right}\) of the curve

Answer 11

can you do the same for pic 30, and tell me whats the range is ?

Answer 12

All I know is that 30 is not a function

Answer 13

thats right ! its not a function !!

Answer 14

for finding range, look up and down of that curve

Answer 15

so it doesnt have a domain or function?

Answer 16

or range* not function lol

Answer 17

down, it is -1, up it is +1
so the range is all numbers between -1 and 1
we represent it as : [-1, +1]

Answer 18

domain and range will be there for every relation

Answer 19

and is domain infinite again?

Answer 20

wat about domain for this ? :)
look left and right, and see if u can figure this out...

Answer 21

noo.. look at the pic., this time, the curve is not going left and right forever

Answer 22

-3 and 3 ?

Answer 23

left, it stopped at -3
right, it stopped at +3

so the domain is all numbers between -3 and +3
we represent it as [-3, 3]

Answer 24

Excellent ! yes everything between -3 and 3

Answer 25

Ohh!:) thank you so much! and i need help with one more thing!

Answer 26

sure :)

Answer 27

determine if y is a function to x.

x^2 = 3y + y

Answer 28

x^2 = 3y + y

?

is the right side, really, 3y+y ?

Answer 29

yes

Answer 30

ok, solve y

x^2 = 3y + y

x^2 = 4y

x^2.4 = y

y = x^2/4

Answer 31

now graph this relation, and see vertical line test passes