Find the Range

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January 15th 2009, 01:04 PM
magentarita

Find the Range

Find the range of f(x) = –x + 4 for the domain
{–3, –2, –1, 1}.
January 15th 2009, 01:08 PM
masters

Quote:

Originally Posted by magentarita

Find the range of f(x) = –x + 4 for the domain
{–3, –2, –1, 1}.

Hi magentarita,

Simply substitute each value you have for the domain and find f(x) which is your range.

$f(x)=-x+4$

$f(-3)=-(-3)+4$

$f(-3)=3+4$

$f(-3)=7$

Like that....
January 15th 2009, 01:08 PM
Moo

Quote:

Originally Posted by magentarita

Find the range of f(x) = –x + 4 for the domain
{–3, –2, –1, 1}.

The range is all the values the function can have.
In other words, the range will be {f(-3),f(-2),f(-1),f(1)}
January 18th 2009, 06:01 PM
magentarita

ok...

Quote:

Originally Posted by masters

Hi magentarita,

Simply substitute each value you have for the domain and find f(x) which is your range.

$f(x)=-x+4$

$f(-3)=-(-3)+4$

$f(-3)=3+4$

$f(-3)=7$

Like that....

That's easy enough. Thanks!
January 18th 2009, 06:02 PM
magentarita

ok..

Quote:

Originally Posted by Moo

The range is all the values the function can have.
In other words, the range will be {f(-3),f(-2),f(-1),f(1)}

I like your reply as well.

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