Visualizing linear functions using mapping diagrams and graphs with focus point.

Linear functions are traditionally expressed by an equation like :[math]f(x)=mx+b[/math]. Mapping diagrams for linear functions have one simple unifying feature- the focus point, determined by the numbers [math]m[/math] and [math]b[/math], denoted here by [math][m,b][/math].

Notice how points on the graph pair with arrows and points on the mapping diagram.[br]Check the box to see the focus point for the function on the mapping diagram.