Linear parent function

A linear parent function is the equation y = x or f(x) = x. A parent function is the simplest equation of a function. Thus, f(x) = x is the simplest of all linear functions and that is the reason why it is called linear parent function.

You can make a table of values to graph this function. See the table below.

x y = x
0 0
1 1
2 2
3 3
-1 -1
-2 -2
-3 -3


Here is the graph for this function.

Graph of linear parent function


We only show 7 points. However, the graph has infinitely many points.

Therefore, the domain is the set of real numbers and the range is the set of real numbers.

Recent Articles

  1. Box and Whiskers Plot

    Nov 18, 22 08:20 AM

    Easily learn to construct a box and whiskers plot for a set of data by using the median and the extreme values.

    Read More

  2. Binary Number System

    Nov 17, 22 10:53 AM

    This lesson will give you a deep and solid introduction to the binary number system.

    Read More

Tough algebra word problems

100 Tough Algebra Word Problems.

If you can solve these problems with no help, you must be a genius!

Math quizzes

 Recommended

Math vocabulary quizzes