Problem 4

Given information

The function is given by the following table:

	1	2	3	4	5	6
	1.0	1.9	2.8	3.5	3.1	2.9

Step-by-step explanation

Here, the set of all input values for the given function is 1, 2, 3, 4, 5, 6.

From the given table, we can observe that the different input values have different output values.

That is, no two different preimages have same image.

Hence the given function is one-to-one.