Some easy problems on One to one functions

Here below i have some easy problems on One to one function, but in my coming post i will show you how to use graphic representation to One to one function problem.

Introduction to One to one function is already given to you in my previous post where i also used a diagram to understand it better. Now lets go further to solve some simple easy problems.

Problem 1:

Find whether the following function is one to one. f = {(10, 1), (11, 2), (8, -5), (34, 0), (8, 3)}

Answer: The given function f is a one to one function.

Problem 2:

Find whether the following function is one to one. f = {(14, 2), (16, 2), (4, 5), (4, 0), (12, 7)}

Answer: The given function f is not a one to one function.

Problem 3:

Is f(x) = 8x + 7 one to one function?

Answer: Yes

Problem 4:

Which functions below are one to one?

Function #1 { (4,27), (3,18), (4,9), (5,0) }
Function #2 { (1,4), (12,1) , (13,7), (18,14) }
Function #3 { (3,22), (4,13), (6,22), (8,1) }

Answer: Function #2 is a one to one function

Learn more looking at the other post which will be posted shortly. Let me know your view on my post, are they interesting and did it help you improve your knowledge?