Question

reinforce understanding
qualitative graphs show the relationship between two variables and represent situations that may not have numerical values.
a student walks to her friends house, plays for an hour, then walks back home.
a motorcyclist rides to the gas station, fills up his tank, then eats his lunch.
for items 1 to 4, describe the graph.

1. the graph displays the temperature of an oven that is being used to bake a cake. describe the change in temperature over time.
2. the graph displays the speed of a track runner during a race. describe the change in speed over time.
3. the graph displays the population of a city in the united states. describe the change in population over time.
4. the graph displays the amount of money in a bank account. describe the change in amount over time.

Explanation:

1. The oven temperature first increases to pre - heat, stays constant while baking, then decreases as it cools.
2. The runner's speed starts low, increases during acceleration, has periods of maintaining speed, and may increase again towards the end.
3. The city population shows a steady growth over time, possibly due to factors like migration and natural increase.
4. The money in the bank account increases through deposits, may stay the same during no - transaction periods, and decreases with withdrawals.

Answer:

1. The temperature first rises to reach the baking temperature, remains constant during baking, and then falls as the oven cools.
2. The speed starts slow, increases during acceleration phases, plateaus during steady - running phases, and may increase again towards the end of the race.
3. The population is growing steadily over time.
4. The amount of money increases with deposits, remains stable during non - transaction periods, and decreases with withdrawals.