Answer
$y=\frac{3}{4}x+3$
Work Step by Step
The equation for a line defined by a point and slope is $y-y_{1}=m(x-x_{1})$ in which $m$ is the slope, and $x_{1}$ and $y_{1}$ are the coordinates of a given point, so therefore...
$y-3=\frac{3}{4}(x-0)$
$y-3=\frac{3}{4}x$
$y=\frac{3}{4}x+3$
