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Concept

Constant Function

A constant function is a linear function whose graph has a slope of

0 .

In other words, as the values of

x

change, the function value

y

stays the same or constant. The equation of a constant function can always be written in the following form.

$y = b$

Here, $b$ is the $y -$ intercept. An example constant function is $y = 2 .$

Constant functions typically do not have $x -$ intercepts. The only exception is the function $y = 0,$ which has an infinite number of $x -$ intercepts.

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