The graph shows the water y (liters) left in a tank x minutes after a valve opens, for $x\ge 0$. What does the y-intercept mean in this situation?

A generator's remaining fuel y (liters) after x hours of running is graphed for $x\ge 0$. What does the x-intercept mean in this situation?

A student graphed C = 60 - 4t, the money C (dollars) left on a bus card after t rides. The t-intercept is 15, and the student wrote that the card cost $15. What does the t-intercept actually mean?

A freezer's inside temperature y (degrees Celsius) x hours after it is unplugged is graphed for $x\ge 0$. What does the x-intercept mean here?

The graph shows a hiker's distance y (kilometers) from camp x hours after she sets out, for $x\ge 0$. What does the y-intercept tell you about the hike?

The graph shows a stone's height y (meters) x seconds after it is thrown upward, for $x\ge 0$. What does the x-intercept on the right side of the graph mean?

A pool is filled at a steady rate, and its volume is V = 30t + 120, where V is liters and t is minutes. What does the V-intercept, 120, mean?

The graph shows a drone's height y (meters) x seconds after takeoff, for $0\le x\le 6$. Over which interval is the drone rising?

A student claims the temperature climbs all morning. The graph shows the temperature y (degrees Celsius) x hours after 6 a.m., for $0\le x\le 8$. When is the temperature actually falling?

A delivery van is parked whenever its distance from the depot stays the same. The graph shows that distance y (kilometers) x hours after leaving, for $0\le x\le 8$. When is the van parked?

The graph shows the height y (meters) of a construction lift x minutes after it starts, for $0\le x\le 8$. Between which times is the lift descending?

A robot moves toward a wall while its distance from it decreases. The graph shows that distance y (meters) x seconds after the robot starts, for $0\le x\le 9$. When is it moving toward the wall?

The graph shows a firework's height y (meters) x seconds after launch, for $0\le x\le 5$. What does the highest point of the graph tell you?

The graph shows the water depth y (meters) at a jetty x hours after noon, for $0\le x\le 6$. What does the lowest point of the graph mean?

The graph shows a school stall's daily profit y (dollars) when it charges x dollars a cup, for $0\le x\le 5$. What does the maximum point mean?

The height h (meters) of a hanging cable above a walkway, x meters from one post, is $h=0.5(x-6{)}^2+3$. What does the vertex (6, 3) mean here?

A rocket's height is modeled by $h=-5x^2+20x$, where h is meters and x is seconds. A student says its greatest height is 2 meters. What did the student report by mistake?

A phone battery starts fully charged and loses charge at a steady rate while a video plays. Which lettered graph could model the battery charge over time?

A ball is kicked from ground level, rises, and drops back to the ground. Which lettered graph could model the ball's height over time?

A bus leaves the station, drives for a while, waits ten minutes at a stop, then drives on. Its distance from the station is graphed against time. What does that graph look like?