| Open 
                    the Scaling Excel worksheet below, showing horizontal and 
                    vertical scaling corresponding to the functions f(kx) 
                    and kf(x). Use 
                    the slider to change the value of k and note how the graph 
                    and the equation of the function automatically change.  
                    Try different values of k and b …How does a change 
                    in k and b influence the function – what is the relationship 
                    between k and the graph and the equation?
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