Chapter 4

Graphs and Functions


This chapter gives an overview of the basic concepts of graphs and functions, focusing on rectangular coordinates, distance between points, midpoints, and straight line equations. Also, the chapter illustrates the vertical line test for a function and the concept of inverse of function.


Distance between points; Function; Graph; Inverse of function; Midpoints; Rectangular coordinate; Vertical line test

To be able to look back upon one's past life with satisfaction is to live twice.

Marcus Valerius Martial

Albert Einstein (1879–1955), a German physicist and mathematician. He discovered the hugely important ...

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