B. Determine the slope of the line
given two points.
$1.$ $\left(-2,4\right)$ and $\left(1,6\right)$
$2.$ $\left(-3,-1\right)$ and $\left(5,-5\right)$
$3.$ $\left(3,-3\right)$ and $\left(-4,2\right)$
$4$ $\left(-3,2\right)$ and $\left(2,2\right)$
$5.$ $\left(3,4\right)$ and $\left(3,-3\right)$