how to write this table as an equation

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illuminati58
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how to write this table as an equation

Postby illuminati58 » Sun Jul 12, 2009 11:46 pm

x -2 -1 0 1 2
f(x) -2 2 6 10 14

illuminati58
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Re: how to write this table as an equation

Postby illuminati58 » Sun Jul 12, 2009 11:55 pm

wouls this be right?

f(-2) = -2, f(-1) = 2, f(0) = 6, f(1) = 10, f(2) = 14

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stapel_eliz
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Postby stapel_eliz » Mon Jul 13, 2009 1:50 am

That kind of depends. What were the instructions? What are you supposed to do with the table of values?

Thank you! :D

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Re: how to write this table as an equation

Postby illuminati58 » Mon Jul 13, 2009 12:55 pm

look at the table and Write out an equation for f(x) :popcorn:

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stapel_eliz
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Postby stapel_eliz » Mon Jul 13, 2009 3:10 pm

In that case, you don't want to relist the values (as you did), but instead find a formula relating the inputs and outputs. You can try to find the next number in the sequence, since you are counting by 1s for the x-values. Or you could do a regression in your calculator. Or you could plot the points, and see what you can come up with.

What method(s) are you supposed to use? How far have you gotten in applying what they've given you?

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Re: how to write this table as an equation

Postby illuminati58 » Mon Jul 13, 2009 6:30 pm

The question is: Take a look at the table below and write out an equation for f(x).

when your talking about methods; are you refering to one of these three to use, if so how?

numerically: by means of a table
algebraically: by means of a formula
graphically: by means of a graph

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stapel_eliz
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Postby stapel_eliz » Tue Jul 14, 2009 2:27 am

"Numerically" would be looking at the numbers, such as is suggested in the lesson in the link (provided earlier), or doing a regression. "Algebraically" would be using some of the formulas and methods in the lesson link. "Graphically" would be the graphing I mentioned earlier.


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