List the ordered pairs in the relation R from A = {0, 1, 2, 3, 4} to B = {0, 1, 2, 3} where
(a, b) ϵ R if and only if a + b = 4.

Question

List the ordered pairs in the relation R from A = {0, 1, 2, 3, 4} to B = {0, 1, 2, 3} where 
               (a, b) ϵ R if and only if a + b = 4.

anonymous · Answer

do you understand what this means? for example 
$(1,3)$ is in R since $1+3=4$

anonymous · Answer

So basically I need to list the ordered pairs that would equal 4?

anonymous · Answer

yes

anonymous · Answer

easy right?  that is why my first question was "do you understand what this means?"

anonymous · Answer

I'm not really great in math and I've been looking for what the e symbol means to better understand it... but after your example, yeah its really easy.  Thanks so much!

anonymous · Answer

(1, 3), (2, 2), (3, 1), (4, 0) so this should be my answer