Monday 1/5 / Lesson 9.1
Graphing Ratios / HW #9.1
Tuesday 1/6 / Lesson 9.2
Recognizing Proportional Relationships / HW #9.2
Wednesday 1/7 / Lesson 9.3
Constant of Proportionality / HW #9.3
Thursday 1/8 / Lesson 9.4
Proportional Relationships & Equations / HW #9.4
Friday 1/9 / Lesson 9.5
Maps & Scale Drawings / HW # 9.5
Monday 1/12 / Lesson 9.6
Problem Solving / No HW
Tuesday 1/13 / Review / HW: # 9.7
Wednesday 1/14 / Test Unit 9Proportions
Review section on Expressions

#9.1 Homework Practice

Graphing Ratios

  1. When it is running smoothly, the assembly process can put together 7 mechanical dinosaurs every 4 minutes. Which table shows how many dinosaurs the process assembles for the given number of minutes?

  1. To make a flag a certain number of yards of fabric are needed. The graph shows the ratio of yards of fabric needed to number of flags made. Make a table of ratios from the graph.

  1. For a fundraiser, a student club sells 6 poster for $3. How many posters does the club need to sell in order to get $8? Use the graph to help you solve the problem.

The club needs to sell ______posters.

#9.2 Homework Practice

Recognizing Ratios

  1. You prepare 10 scoops of dog food for 4 dogs, and prepare 16 scoops of dog food for 8 dogs. Is there a proportional relationship between the number of scoops and the number of dogs?
NO YES
SHOW WORK to justify your answer
  1. Which table shows a relationship that is proportional?

  1. For what value of x do the two ratios suggest a proportional relationship.
13 to 3 x to 39
  1. 13
  2. 169
  3. 39
  4. 117

  1. For the graph below, tell if the number of seconds and the number of feet run have a proportional relationship.


#9.3 Homework Practice

Constant of Proportionality

  1. You are making a new recipe for dinner. The recipe has the following proportional relationship.
12 cups of asparagus for 3 cups of sauce
36 cups of asparagus for 9 cups of sauce
Find the constant of proportionality. Then, find how many cups of asparagus you would need for 7 cups of sauce.
The constant of proportionality is ______cups of asparagus per cup of sauce.
You need _____ cups of asparagus for 7 cups of sauce.
  1. A recipe requires 3 cups of flour to make 15 servings and 7 cups of flour to make 35 servings. How many cups of flour are needed to make 20 servings?
  1. 5 cups
  2. 8 cups
  3. 7 cups
  4. 4 cups

  1. Find the constant of proportionality for the proportional relationship between weight and cost shown in the table.

The constant of proportionality is $______per ounce.
  1. Does the table show a proportional relationship? If so, what is the constant of proportionality of y to x? Show work to justify your answer.

  1. The table shows a proportional relationship.
The constant of proportionality is ____.
  1. The table does not show a proportional relationship.

  1. The graph shows a proportional relationship for part of your trip to an event. What is the constant of proportionality?
The constant of proportionality is ____ miles per hour.

#9.4 Homework Practice

Proportional Relationships and Equations

  1. The equation below describes a proportional relationship between x and y. What is the constant of proportionality?

The constant of proportionality is _____.
  1. The equation represents the perimeter, P, of a square with a side length s. What is the perimeter of a square with side length 5 cm?
The perimeter is _____ cm.
  1. An arts and crafts store sells sheets of stickers. Use the table to write an equation you can use to find the total cost y in dollars for x sheets of stickers.

You can use the equation y = ______to find the total cost y in dollars for x sheets of stickers.
  1. Solve the proportion.

#9.5 Homework Practice

Maps and Scale Drawings

  1. On a floor plan, 1 in. represents 4 ft. According to the map, what are the real dimensions of the kitchen?

  1. Using the diagram, what is the actual length of the truck.

The actual length of the truck is _____ feet.
  1. A portion of a map with cities A and B is shown. The map uses the scale 1 inch = 30 miles. You are making a map with a scale of 2 inches = 15 miles. How far apart are the cities A and B on your map?

On your map, cities A and B are ____ inches apart.
  1. Flooring. How many square feet of flooring is needed to cover the entire living room floor.

  1. On a map, 2 inches equals 120 miles. The distance the family travels is 2.5 inches on the map. Represent this scale as two different ratios.

#9.7 Homework Practice

Review

  1. The table shows a proportional relationship between x and y. Complete the table.


Yes, it’s proportional/ No it’s not proportional (Explain why) ______
______
  1. A baker likes to make cookies. The graph shows a proportional relationship between cups of flour used and number of cookies made. What does the point (0,0) represent?
What does the point (0,0) represent?
Select all that apply.

  1. The baker makes 0 cookies with 0 cups of flour.
  2. The baker needs 0 cups of flour to make 0 cookies.
  3. The unit rate is 0 cookies per cup of flour.
  4. The unit rate is 0 cups of flour per cookie.

  1. Does the graph show a proportional relationship between x and y?
Explain why or why not:
______
______
______
______
______
  1. The weight of 6 eggs is shown. Identify the constant of proportionality of total weight to number of eggs.