Which graph represens a proportional relationship? Explain how you know.
Illustrative Mathematics, Grade 7, Unit 2 Review
Which graph represens a proportional relationship? Explain how you know.
The equation C = 3.14d relates circumference of a circle, C, to the circle’s diameter, d.
Determine whether there is a proportional relationship between C and d. EXPLAIN or
SHOW your reasoning.
The two lines represent the cost of tomatoes, depending on their weight, at two
grocery stores. Which grocery store is more expensive (higher cost per pound)?
Explain how you know.
The table shows the weights of bananas at a grocery store. Complete the table so that
there is a proportional relationship between the number of bananas and their
weight. SHOW YOUR WORK!
Jane earns $15 per hour babysitting. Write an equation to represent the amount of
money d (in dollars) that she earns babysitting h (hours)? SHOW YOUR WORK!
The graph shows the cost S (in dollars) of m (months), a proportional relationship.
A recipe for cookies calls for 5 cups of flour for every 2 cups of butter. The line
represents the relationship between the amount of flour and the amount of butter
needed to make cookies according to this recipe. The point (1, 2.5) is on the line.
