What is the effect of k on f(x)=g(5x) where g(x) is a piecewise function? a) since k=5>1, the graph of f(x) should be vertically compressed towards the x-axis by a factor of 5
b) since k=5>1, the graph of f(x) should be vertically compressed towards the x-axis by the factor of 1/5
c) since k=5>1, the graph of f(x) should be horizontally compressed towards the y-axis by a factor of 5
d) since k=5>1, the graph of f(x) should be horizontally compressed towards the y-axis by a factor of 1/5