Lines

1. $\rhd$ Finding the slope of a line (6:42)  Find the slope of a line given two points, namely:
   • [Example 1]  $(1,2)$ and $(5,4)$
   • [Example 2]  $(1.5,2.3)$ and $(5,-1.7)$
2.   $\rhd$ Find the equation of a line using the point-slope form (5:33) Find the equation of a line using the point-slope form given two points:
   • [Example 1]  and
3.   $\rhd$ Graphing a line using a point and the slope (6:24) Graph a line given a point and the slope, namely:
   • [Example 1]   $(1,2)$ and slope $3$
   • [Example 2] $(-2,1)$ and slope $-\dfrac{2}{3}$
4.   $\rhd$ Graphing a line using the x- and y-intercepts (8:23)
   • [Example 1]  Graph $2x+4y=12$
   • [Example 2]  Graph $3x-2y=8$