Question

Is the following relation a function or not a function? How can you tell? (4, 7) (3, 8) (1, 9) (4, 3)

Answer 1

The relation you provided is not a function.

Explanation:

In a function, each input (x-value) should correspond to exactly one output (y-value). However, in the given relation, the x-value "4" is associated with both "7" and "3," violating the one-to-one correspondence required for a function. This makes it not a function.