Charging Rates and Function Behavior

This video tutorial covers grade 8 module 6 on linear functions, focusing on increasing, decreasing, and constant functions. It explains how the slope of a graph indicates the nature of a function. The exit card exercises involve analyzing graphs related to car value over time and comparing electric car charging rates.

What is a function called if its graph has a positive slope?

• Non-linear function

• Constant function

• Increasing function

• Decreasing function

Which of the following describes a function with a zero slope?

• Variable function

• Constant function

• Decreasing function

• Increasing function

In the car value graph, which part represents the car's value holding steady?

• Part D

• Part C

• Part B

• Part A

What does Part C of the car value graph indicate?

• The car's value is holding steady

• The car's value is fluctuating

• The car's value is increasing

• The car's value is decreasing

Which part of the graph shows the car's value depreciating at a constant rate?

• Part B

• Part A

• Part C

• Part D

How is Henry's car battery being recharged according to the graph?

• At a rate of 5% every 10 minutes

• At a rate of 10% every 10 minutes

• At a rate of 20% every 10 minutes

• At a rate of 15% every 10 minutes

How long does it take for Roxy's supercharger to charge half of the battery?

• 20 minutes

• 25 minutes

• 15 minutes

• 10 minutes

Where does Roxy's charging graph start?

• At 50% charge

• At 25% charge

• At 0% charge

• At 10% charge

Which car will be fully charged first?

• Henry's car

• Roxy's car

• Neither will be fully charged

• Both at the same time

Why does Roxy's car charge faster than Henry's?

• Roxy's car has a larger battery

• Roxy's charger has a higher charging rate

• Henry's charger is broken

• Roxy's car is newer