Determine the rule or equation represented by the scatter plot shown in the figure.

The plotted points in the figure progress in a line; that is, they form a linear pattern. Hence, the equation of such linear pattern is in the form $y=mx+b.$ Notice that whenever x increases by 3, y increases by 2; hence, the slope of the linear pattern is equal to $\frac{2}{3}.$ Also, when $x=0, y=4.$ Thus, $b=4$ and the equation that describes the linear pattern is: