Chapter 2 - Functions, Equations, and Graphs - Chapter Review - Page 124: 20

$y=-3x+4 $

Using $y=mx+b$ (where $m$ is the slope and $(0, b)$ is the $y$-intercept) or the Slope-Intercept Form of linear equations, then the equation of the line given that the slope is $-3$ and the $y$-intercept is $(0, 4),$ is \begin{array}{l}\require{cancel} y=-3x+4 \end{array}