Which sets of ordered pairs represent functions from A to B? (Select all that apply.)
A = {3, 4, 5, 6} and B = {−2, −1, 0, 1, 2}
{(3, 2), (6, 0), (4, 1)}
{(3, −1), (5, 2), (4, −2), (6, 0), (4, 1)}
{(3, 1), (4, −2), (5, 0), (6, 2)}
{(3, 0), (4, 0), (5, 0), (6, 0)}
2 answers
if each x-value is used only once, then it is a function
Would the last option count because it would be y=0x?