Answer
$\text{slope: }
-2
,\\\\\text{$y$-intercept: }
4$
Work Step by Step
Using the properties of equality, the given equation, $
4x+2y=8
$, is equivalent to
\begin{array}{l}
2y=-4x+8
\\\\
y=-\dfrac{4}{2}x+\dfrac{8}{2}
\\\\
y=-2x+4
.\end{array}
Using $y=mx+b$ where $m$ is the slope and $b$ is the $y$-intercept, then the equation above has the following characteristics:
\begin{array}{l}
\text{slope: }
-2
,\\\\\text{$y$-intercept: }
4
.\end{array}