The table shows sets of ordered pairs that form a relation
does each set of ordered pairs represent a function?
select function or not a function for each set of ordered pairs.
set of ordered pairs
function or
not a function
{(1,,7), (8,-, 2)}
{(4,7), (–1, , -, -2)}
{(3,,2), (-4,-2), (-3, -2)}
{(-3,,2), (4, -2), (12. – 4)}