Which inequality will have a shaded area it’s graph

Which of the following could be the graph of the equation y = -2x + 5

()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

Can someone me with this problem i don't understand i need