# Math Help - Domain of ordered pairs

1. ## Domain of ordered pairs

If f = {(1,2),(2,-4)} and g = {(0,3), (1,-2)}, find the following?

a) f + g ; do they want me to do this: ( 1+0, 2+3), (2+0, -4 -2)
b)Domaing of f+g
c) f/g
d) domain of f/g

i dont get it

2. Originally Posted by NeedHelp18
If f = {(1,2),(2,-4)} and g = {(0,3), (1,-2)}, find the following?

a) f + g ; do they want me to do this: ( 1+0, 2+3), (2+0, -4 -2)
b)Domaing of f+g
c) f/g
d) domain of f/g

i dont get it
Hi!

What that is saying is,
$f(1)=2$ and $f(2)=-4$
and
$g(0)=3$ and $g(1)=-2$

And remember
$(f+g)(x)=f(x)+g(x)$
and $(\frac{f}{g})(x)=\frac{f(x)}{g(x)}$

See if you can figure it out from here.