Question $1$: Linear Equations & Graphing

A linear equation is written in a general form as $y=mx+b$ where:

$x$ is the variable

$Y$ is the variable

$M$ is the

$b$ is the

Given the following data, plot the line:

$\backslash$table$[[x-$Quantity Purchased,$Y-$ Price $\frac{\text{\$}}{l}b.],[2\mathrm{.}30,0],[1\mathrm{.}70,60],[1\mathrm{.}10,120],[\mathrm{.}50,180],[0,230]]$

What is the slope of the line? Show the calculation.