The graph of g(x) is a vertically scaled version of the graph of f(x). The scale factor is 1/2, so vertical height at a given value of x is 1/2 what it is for f(x). This will make the graph appear shorter and fatter than for f(x).
1. I don’t know exactly what you need but 4 divided by 7 is about 0.57 feet or 6.86 inches 2. If you are allowed excess, then you will have 7 pieces each at 0.5 feet with half a foot left extra