Answer:
See explanation below.
Step-by-step explanation:
Define each relation as a function or not a function:
{(3, 7), (3, 6),(5, 4),(4, 7)} - is not a function because there are two answers for the same input, which is 3. One time the output is 7 and another time the output is 6.
{(1,5), (3, 5),(4, 6), (6,4)} - is a function
{(2, 3),(4, 2), (4, 6), (5,8)} - is not a function because there are two answers for the same input, which is 4. One time the output is 2 and another time the output is 6.
{(0,4), (3, 2),(4, 2), (6,5)} - is a function
Any time that the same x input can generate different outputs, then the relation is not a function. There must be a unique output for every input.
Hope this helps! have an Awesome Day!! :-)
