Answer
$y=-\frac{1}{4}x+3$
Work Step by Step
Let $(x_{1},y_{1})=(0,3)$ and $(x_{2},y_{2})=(4,2)$
Slope $m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}=\frac{2-3}{4-0}=\frac{-1}{4}$
Because the line crosses the y-axis at $(0,3)$,
Y-intercept $b=3$
Slope-intercept form is
$y=mx+b$
Substituting the values of $m$ and $b$, we get an equation of line as
$y=-\frac{1}{4}x+3$
