$4)$ In the Week $2$ PowerPoint slides, it is shown that the Market Model for Portfolio Analysis can be mathematically expressed as an expanded variant of the equation for a line $($i$.$e$.,$ it has one more additional variable, a random error term$).$ In your pre$-$requisite courses, you learned that the equation for a line is: y $=$ mx $+$ b$,$ in which $"$m$"$ is the slope and $"$b$"$ is the $"$y$"$ intercept $($using X & Y graph, with X as the horizontal axis and the Y as the vertical axis$).$ With this in mind, now answer the following True$/$False question.

True or False: On this basis, it is the Beta coefficient that is the slope for a graphical expression for a given investment.