Explain what the data point (2,78) means in the context of the problem
At hour 2, the temperature was 78 degrees
What does the y intercept mean in this situation?
The starting temperature was 82 degrees
What is the tank temperature after 5 hours?
72 degrees
Explain what the rate of change means in the context of the problem
The temperature drops 2 degrees for every hour
What is the rate of change?
Down 2, run 1 = -2
Does this graph represent a function? Why or why not?
Yes, because temperature depends on time, every input (time) has a unique output (temperature)
Does this graph represent a function? Why or why not?
Yes, because temperature depends on time, every input (time) has a unique output (temperature)
What is the temperature after 4 hours?
16
What does the y intercept mean in this situation?
The starting temperature was 8 degrees
Explain what the data point (5,20) means in the context of the problem
at hour 5, the temperature was 18 degrees
Write a linear equation that models the relationship between the temperature and the time
y = -2x + 82
Explain what the rate of change means in the context of the problem
The temperature increases by 2 degrees every hour
What is the rate of change?
Rise 4, Run 2 = 2
Write a linear equation that models the relationship between the temperature and the time
y = 2x + 8