The vehicular traffic at a busy road crossing in Jaipur, which was studied by the Rajasthan police, the number of vehicles passing through the crossing every alternate hour is shown in the bar graph. Time intervals are shown x-axis and number of vehicles are shown on y-axis. One unit of length stands for 50 vehicles.

1. Represent the above bar graph by a pictograph.

2. Draw a bar graph taking time intervals on y-axis and number of vehicles on x-axis.