Question

Correctly classify each relation.

1. {(3, 7), (3, 6), (5, 4), (4, 7)}
2. {(1, 5), (3, 5), (4, 6), (6, 4)}
3. {(2, 3), (4, 2), (4, 6), (5, 8)}
4. {(0, 4), (3, 2), (4, 2), (6, 5)}

Function Or Not a Function?

Answer 1

1.not function

2. function

3.not function

4.function

Answer 2

1. not a function
2. function
3. not a function
4. function

Step-by-step explanation:

A function has each x input go to exactly one and only one y output. This means something like (3,7) and (3,6) leads to "not a function". The input x = 3 leads to multiple outputs.

So all we have to do is look at the x coordinates of the points. If we see any repeats, then the answer is "not a function". Otherwise, we have a function.