# Question #58e75

May 20, 2017

$y = 256$ is a horizontal line through $\left(0 , 256\right)$

#### Explanation:

The equation can also be written as $y = 256$

For a function, for a specific value of $x$ there must be only one answer for $y$.

$x \to y$

In this case, the value of $x$ you choose has no effect on the value of $y$, which is always $256$

$5 \to 256 , \mathmr{and} \left(- 3\right) \to 256 , \mathmr{and} 80 \to 256$ etc

This is known as a many-to-one function because many values of $x$ all give the same value for $y$.

The graph will be a horizontal line going through $\left(0 , 256\right)$