# How can I determine whether a given graph represents a function?

Jun 3, 2016

Se explanantion

#### Explanation:

Consider the equation $y = m x + c$

You can give any value you chose to $x$ and the value of $y$ depends on what value you give to $x$

So $y$ is the dependant variable and $x$ is the independent variable.

What you looking for is this: if the independent variable only maps to one value in the dependant variable then the equation/graph is that of a function.