1. Find the Range

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

2. 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.

$\displaystyle f(x)=-x+4$

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

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

$\displaystyle f(-3)=7$

Like that....

3. 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)}

4. ok...

Originally Posted by masters
Hi magentarita,

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

$\displaystyle f(x)=-x+4$

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

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

$\displaystyle f(-3)=7$

Like that....

That's easy enough. Thanks!

5. ok..

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)}