SWBAT decide whether two quantities are proportional by graphing on a coordinate plane and observing for a straight line through the origin
Question 1
1.
Mr. Espinoza does not like to go running. Instead, the table shows his walking pace.
a. Is this still proportional?
Check with the table and by graphing, then explain using 2 different strategies
Question 2
2.
Still Running--Mr. Hernandez loves to run, and his running pace is shown below.
Graph the coordinate pairs. Is this a proportional relationship? Use evidence from the table AND the graph.
CFS
#1: Accurately computes unit rates
#2: Explains using appropriate evidence from tables and graphs
MEDIUM Problems
Question 3
3.
Takis are Back!--Back at Ms. P's Place, Takis are sold for the following prices:
Graph the coordinate pairs.
Is this a proportional relationship? Use evidence from the graph.
CFS
#1: Accurately computes unit rates
#2: Explains using appropriate evidence from the graph
Question 4
4.
Life Savings--Andrea is plotting how much money she has in her bank account over time. She starts with $30 and every week she saves $5 more.
Is the following statement true or false?
"Using only the graph, Student McStudentson can tell that this is a proportional relationship because it is a straight line."
SPICY Problem (try if you have time)
Question 5
5.
BE CREATIVE--Create your own table and graph that shows a relationship that is NOT proportional.
Make sure to...
1) Write out a word problem
2) Complete the table
3) Complete the graph and explain why it is not proportional.
Question 6
6.
Berry Picking—The following table gives the number of people picking strawberries in a field and the corresponding number of hours worked by each person.
Graph the coordinate pairs from table. Is this a proportional relationship? Please use evidence from the graph AND the table.
CFS
#1: Accurately computes unit rates
#2: Explains using appropriate evidence from tables and graphs