Linear Function by Table of Values

The table of values of a linear function is useful if you need to draw the graph of this function. This table contains selected $x$ and $y$ coordinates of individual points. If you connect these points, you get the graph of the associated function.

Procedure - drawing the function

Draw the points from the value table into a coordinate system.
Connect the points by a line.
Obtain the graph of a linear function by extending the line.

Example

$\textbf{x}$	$- 4$	$- 2$	$0$	$2$	$4$	$6$	$8$
$\textbf{y}$	$- 2$	$- 1$	$0$	$1$	$2$	$3$	$4$

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Note

Generally, two points are sufficient to draw the graph of a linear function.

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