Write two points and find the slope

In 2010 a town had 10,500 people. It went up to 12,750 in 2015.

$\begin{array}{rcl} \text{Point 1 } (2010, 10500) \\ \text{Point 2 } (2015, 12750) \\ \\ \hline \\ \text{slope } &=& \dfrac{12750-10500}{2015-2010} \\\\ \text{slope } &=& \dfrac{2250}{5} \\\\ \text{slope } &=& 450\ \frac{ \text{people}}{ \text{year} } \end{array}\\ $