Question

determine whether each relation is a function. Assume that each different variable has a different value.
{(a,b) (b,a) (c,c) (e,d)}

Answer 1

if there is no x values that are the same, then it is a function. Now look at your x values in your points (x,y)....are there any x's that are the same number...um...or the same letter ?

Answer 2

no none of the x's r the same

Answer 3

the y's can be the same, just not the x's
yep..you got it, there is no x's the same....so it is a function

Answer 4

oh ok now i can solve the rest of these now that i know how to see if its a function thank you

Answer 5

no problem :)