Analyzing Car Charging Rates and Functions

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. Students learn to interpret graphs and understand functional relationships.

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

• Increasing function

• Non-linear function

• Constant function

• Decreasing function

What does a zero slope on a graph indicate about a function?

• The function is non-linear

• The function is increasing

• The function is decreasing

• The function is constant

In the graph showing a car's value over time, which part represents a steady value due to a positive consumer report?

• Part A

• Part B

• Part D

• Part C

Which part of the graph indicates a rise in the car's value due to a shortage of used cars?

• Part B

• Part C

• Part A

• Part D

What does part A of the graph represent in terms of the car's value?

• The value is increasing

• The value is decreasing

• The value is fluctuating

• The value is constant

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

• At a rate of 5% every 10 minutes

• At a rate of 15% every 10 minutes

• At a rate of 20% every 10 minutes

• At a rate of 10% every 10 minutes

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

• 10 minutes

• 15 minutes

• 20 minutes

• 25 minutes

Where does Roxy's graph start when she begins charging her car?

• At 0%

• At 50%

• At 25%

• At 10%

Which car will be fully charged first based on the graph?

• Roxy's car

• Henry's car

• Neither will be fully charged

• Both at the same time

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

• Roxy's charger is faster

• Roxy's charger is slower

• Henry's charger is faster

• Both chargers are the same speed