The point $\left(21,32\right)$ is on a line with slope $1.5$.  

1. Find the equation of the line.

2. Find the coordinates of another point on the line.

   Hint:

   One possible way to solve this problem is to plot the point and use the slope to draw the line.
   Convert $1.5$ to a fraction and remember that the numerator is the rise and the denominator is the run.

   More Help:

   Look at the graph to find the $y$-intercept and use it along with the given slope to complete the equation $y=mx+b$.

   Answer a:

   $y=1.5x+0.5$

   Additional Help:

   To find a third point on the line, either find one on your graph, or substitute any number for $x$ and evaluate for the value of $y$.