Question

which table represents a function?
a. x 3 -1 1 -1
y 0 4 2 -2
b. x 0 1 0 2
y 2 3 0 3
c. x -2 2 4 -2
y 5 1 5 5
d. x 5 4 5 1
y 1 5 4 5

Answer 1

The table that represents a function is Table B.

Function is a relation where each input value (x-value) corresponds to exactly one output value (y-value). In Table B, each x-value has only one corresponding y-value, making it a function. The other tables have multiple y-values corresponding to some x-values, making them not functions.