Assume the relationship is a direct variation, what is the equation ?

please help asap

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

What could explain what happened when the time was equal to 120 minutes

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4