# What is the domain of f(x) = {(1, 2), (3, 4), (5, 6), (7, 8), (9, 10), (10, 10)}?

Domain corresponds to the $x$-values, the independent(input)
$D : \left\{1 , 3 , 5 , 7 , 9 , 10\right\}$
Range corresponds to the $y$-values, the dependent(output)valsome.
$R : \left\{2 , 4 , 6 , 8 , 10\right\}$