Analyze and Sketch Function Graphs Practice Test

A student records the amount of water in a tank. From 0 to 5 minutes, the tank fills at a constant rate. From 5 to 8 minutes, the tank is not filling or draining (the amount stays the same). From 8 to 10 minutes, the tank drains at a constant rate.

Which sketch best matches this description (time on x-axis, amount of water on y-axis)?

A student's distance from home (in miles) changes during a bike ride. The distance increases at a constant rate from 0 miles at 1:00 PM to 6 miles at 2:00 PM. Then the student rides back toward home at a constant rate and is 2 miles from home at 3:00 PM. Which sketch best matches this description (time on the x-axis, distance on the y-axis)?