Select all of the following tables which represent y as a fu

Select all of the following tables which represent y as a function of x.

Solution

For any table to represent a function, x values should not be repeated. (Because a function means each x value is mapped with exactly one value of y).

Note that y- values can be repeated.

(a) Here no x- values are repeated, it is a function.

(b) Here no x- values are repeated, it is a function.

(c) Since x=10 is repeated twice, it is not a function.