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Question 3980: What is the range and domain of these problems in ordered pair form, or in inequality form pls...y=-3x-1
y=-3x^2+1
y=5
y=x^3-1
y=the square root of x
y=(x+1)^(1/2)
y=(x-1)^(1/2)
y=(x^2+9)^(1/2)
y=(x-6)^(1/3)
y=6/(x-3)
Answer by longjonsilver(2297)   (Show Source):
You can put this solution on YOUR website! 1. y=-3x-1
domain is xeR
range is yeR
2. y=-3x^2+1
domain is xeR
range is yeR, y<=1
3. y=5
domain is xeR
range is y=5
4. y=x^3-1
domain is xeR
range is yeR
5. y=
domain is xeR, x>=0
range is yeR, y>=0
6. y=(x+1)^(1/2)
domain is xeR, x>=-1
range is yeR, y>=0
7. y=(x-1)^(1/2)
domain is xeR, x>=1
range is yeR, y>0
8. y=(x^2+9)^(1/2)
domain is xeR
range is yeR, y>=3
9. y=(x-6)^(1/3)
domain is xeR
range is yeR
10. y=6/(x-3)
domain is xeR, x not 3
range is yeR, y not 0
I have zipped through these - i may have overlooked something somewhere, but i think it is all correct.
The secret with domains and ranges is to know what a graph looks like, as tat tells you the answers.
jon.
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