Chapter R - Elementary Algebra Review - R.3 Introduction to Graphing - R.3 Exercise Set - Page 954: 39

$y=5x+9$

Using $y=mx+b$ (where $m$ is the slope and $b$ is the $y$-intercept) or the Slope-Intercept Form of linear equations, then the equation of the line with the given slope equal to $5$ and $y$-intercept equal to $9$ is \begin{array}{l}\require{cancel} y=mx+b \\\\ y=5x+9 .\end{array}