Question

Which table represents y as a function of x?

Answer 1

Table (1)

Explanation:

Table (1),

For every value of x, there is an individual value of y.

Therefore, the function represented by this table is on-to function.

Table (2),

For x = -9, there are 4 different values.

Therefore, table doesn't represents a function.

Table (3),

For x = -4, there are two different output values values of y,

y = 3, -3

Therefore, this table doesn't represent a function.

Table (4),

For x = -10 there are two different output values,

y = 2, -2

Therefore, given table doesn't represents a function.