Question

1) Using the domain {-1, 0, 4}, what is the range for the equation x – 2y = 0?

2) Using the domain {1, 3, 0, 5}, what is the range for the equation 7x – 2y = 9?

3) What is the domain of the function f(x) = 3x+4? Make sure to include any domain
restrictions

4) What is the domain of the function g(x) = √x-3 ? Make sure to include any domain
restrictions.


5) What is the domain of the function g(x) = √4 - 2x ? Make sure to include any domain
restrictions.

Answer 1

x-2y=0
domain =all real x=-1,0,4 given
calculate y from above eq and put values of x to get range

Answer 2

@FrankiesaysRelax did u get it?

Answer 3

Just domain, what about number 2?

Answer 4

what about range for number 1? I don't know how to get the range

Answer 5

in no 2 domain=1,3,0,5
from the eq calculate y
y=(7x-9)/2
now put 1,3,0,5 one by one and u'll get range

Answer 6

I don't need the domain for any of the questions, just the range. I don't know how to get the range

Answer 7

I cannot do the math for it, this is my 3rd time doing this question I give up trying.

Answer 8

u just need to know The domain is the x value which is given The range is the y value
u just have to calculate y gor given x

Answer 9

Please I've been doing this all day, would you just make this easier on the both of us and tell me. I don't mean to be rude but I've been on this all day, my brain is fried.

Answer 10

Thank you this will help a lot, and the rest?

Answer 11

apply the same process

Answer 12

do u know what is meant by [a,b]?

Answer 13

No I don't know anything that's why I'm on here, I just want to know the answers I'm sick of doing this question over and over again.

Answer 14

look first u need to know diffrence between (a,b) and [a,b] to solve the 4th question
(a,b)=a<x<b
but [a,b]=a<=x<=b

now in the 4th prob g(x)=sqrt(x-3)
x values greater than or equal to 3 give values where you can find the square root
if x<3 then there will be a negetive term in the square root it will produce complex number
so x>=3
so domain = [3, ∞)

Answer 15

So my answer for number 4 is range = 3, ∞ for sure?

Answer 16

no it's domain

Answer 17

sorry domain = 3, ∞

Answer 18

And #4?

Answer 19

it's not 3,infinity that's wrong expression it's [3, ∞)

it is number #4

Answer 20

for no 3
f(x)=3x+4
No restrictions
Domain:
In words: all real numbers
Interval Notation: (-∞,∞)

Answer 21

If number 4 is not 3, ∞ then why did you include 3?

Answer 22

Honestly you'd save us both time if you would please just tell me the answers straightforward, not to sound rude.

Answer 23

it can be written as
all real x; x ≥ 3, or (3 ≤ x < ∞)

Answer 24

This is number 3?

Answer 25

no it's #4
#3 i've mentioned above

Answer 26

This is only confusing me more! Okay #1: (-1/2, 0, 2) and #3 is =-∞,∞ and #4 is 3 ≤ x < ∞

Answer 27

Are these right, and what about the others?

Answer 28

i have already told u the process now u can do it :)

Answer 29

Are #1, #3, #4 correct? Is there anybody else that will help me with the last two?

Answer 30

#1: (-1/2, 0, 2) and #3 is =-∞,∞ and #4 is 3 ≤ x < ∞ Are these correct, can I write these down and not fail?

Answer 31

have'nt u understood anything??

Answer 32

No! I haven't, I've sat here for an hour for five small questions!

Answer 33

#2=(-1,6,-9/2,13)
#5= 2 ≤ x < ∞

Answer 34

Okay great thank you, finally. Are there any restriction in any of them