Q$3-$ Data points:

Have a linear model: $y=ax+b$

Write a MATLAB program that will do the following:

$1$ Calculate the values of a and $b.$ Output to the command window.

$2$ Plot the data points as $\text{'}$s$\text{'},$ and the fitted line in the same figure.

$3$ Provide a figure title and axis labels and legend.