Lesson 7: Comparing Graphs
This graph shows the populations of Baltimore and Cleveland in the 20th century.
is the population of Baltimore in year . is the population of Cleveland in year .
Estimate and explain what it means in this situation.
Here are pairs of statements about the two populations. In this pair, which statement is true? Be prepared to explain how you know.
In this pair, which statement is true? Be prepared to explain how you know.
Were the two cities’ populations ever the same? If so, when?
H(t) is the percentage of homes in the United States that have a landline phone in year t.
is the percentage of homes with only a cell phone. Here are the graphs of and .
Estimate and . Explain what each value tells us about the phones.
What is the approximate solution to ? Explain what the solution means in this situation.
Determine if each equation is true. Be prepared to explain how you know.
The number of people who watched a TV episode is a function of that show’s episode number. Here are three graphs of three functions—A, B and C—representing three different TV shows.
Here are graphs that represent two functions, f and g.
Decide which function value is greater for each given input. Be prepared to explain your reasoning.
Is there a value of at which the equation is true? Explain your reasoning.