Find the slope and $y$-intercept of each line below.  

3. The line that goes through the points $\left(5,-2\right)$ and $\left(8,4\right)$.

   Hint (c):

   Graph the points and draw a slope triangle or use the slope formula to calculate the slope.

   Substitute the slope ($m$) and the coordinates of one of the given points into $y = mx + b$. Then solve for $b$.