graph function: find domain, range of line, parabola, etc.

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Can any explain how to find the domain and range of a graph funtion may it be line, parabola, hyperbola, or exponential.
 
We really can't teach courses within this environment. Please post the specific exercise with which you are having difficulty, showing how far you have been able to get. Or else please specify the precise topic(s) on which you are requesting links to online resources.

Thank you.

Eliz.
 
Sorry, I should have read the guidelines first. Ok, here is the graph.

x -2 -1 0 1 2
y .25 .5 1 2 4

I would I go about finding the domain and range?
 
The data set fits, \(\displaystyle \L
y = 2^x .\)
 
canuhelp said:
Ok, here is the graph.

x -2 -1 0 1 2
y .25 .5 1 2 4

I would I go about finding the domain and range?
Click to expand...
The above isn't a "graph"; it's a table of values. (A graph is a drawing; this is a listing.)

The domain is the input values; the range is the output values. So list the given inputs under "domain" and the given outputs under "range". Your book might want you to list the domain and range in set notation; check the worked examples for guidance.

Eliz.
 
Ok, lets try this.

Given this table: x: -2,-1,0,1,2
y: .25,.5,1,2,4

graph the function and give the domain and range as shown in the graph, and also the domain and range of the entire function.

Can anyone help with this problem?
 
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Read my first reply.
 
canuhelp said:
Given this table: x: -2,-1,0,1,2
y: .25,.5,1,2,4

graph the function and give the domain and range as shown in the graph, and also the domain and range of the entire function.
Click to expand...
What is meant by "the entire function"? All that you've posted is a list of points, so that's all we have: a set of x-values for the domain and a set of y-values for the range.

Are you supposed to find some function that can fit these points, assume that the table of values was generated by that function, and then work with that function instead of the given information?

Please clarify. Thank you.

Eliz.
 
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