#### Answer

$y=-\dfrac{3}{4}x+7$

#### Work Step by Step

A $y-$intecept of $(
0,7
)$ implies that $b=
7
.$
Using $y=mx+b$ or the slope-intercept form of linear equations where $b$ is the $y-$intercept and $m$ is the slope, the equation of the line with $m=
-\dfrac{3}{4}
,$ and $b=
7
$ is
\begin{array}{l}\require{cancel}
y=-\dfrac{3}{4}x+7
.\end{array}