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7th Math Spring Interim Reteach Day 2 - 4/19

Last updated over 1 year ago
18 questions
Objective and Summary:
SWBAT interpret graphs to find unit rates as rational numbers (fractions or decimals) and represent with equations
*Make sure to use the SYW section and label/create a table for your calculations*
More Mancini Mart--Many customers went to Mancini Mart and bought different amounts of candy.

CFS:
#1: Accurately identifies the constant of proportionality
#2: Writes an accurate equation using appropriate variables
#3: Uses equation to extend the proportional relationship
1

Given the ordered pair (2, 5), which of the following are the constant of proportionality?

1

a) Write an equation to represent the proportional relationship with total cost, c, and pounds of candy, p.

**You must use Formative's SYW section and make a table to calculate**

1

b) Prove that your equation is correct using values from the graph/table.

1

c) How much would it cost you to get 9 pounds of candy for Halloween?

"9 pounds of candy would cost..."

Nature--Mr. Espinoza went hiking in Berkeley over the weekend.


CFS:
#1: Accurately identifies the constant of proportionality
#2: Writes an accurate equation using appropriate variables
#3: Uses equation to extend the proportional relationship
1

Identify 1 ordered pair (x,y) of the points on the graph

1

What is the constant of proportionality for this graph?

1

Write an equation to represent the proportional relationship with distance in miles, m, and time in hours, h.

1

How far can Mr. Espinoza hike if he is out for 4 hours in the morning?

"If Mr. Espinoza is hiking for 4 hours..."

Emergency--A hurricane touched down in Florida last week, leading to floods and evacuations. The height of the water increased at a constant rate.


CFS:
#1: Accurately identifies the constant of proportionality
#2: Writes an accurate equation using appropriate variables
#3: Uses equation to extend the proportional relationship
1

What is the constant of proportionality for this graph?

2

Write an equation to model the relationship using i for inches of water and d for the number of days.

**You must use Formative's SYW section and make a table to calculate**

2

Predict the height of the water after 15 days. Use your equation from part a)

**You MUST use formative's SYW section to get credit**

1

Tables––This table shows a proportional relationship between x and y.

Find the constant of proportionality (k). Using the value for k, write an equation in the form of y = kx.

Review

Avocados—Mr. Espinoza’s teacher friend buys avocados very week. At the grocery store, there is a sign that reads “Avocados-- 1 1/2 pounds ONLY $7”
1

There are a lot of farms around Gilroy. You can pay $9 3/4 for 3 1/4 pounds of avocados. Would you rather shop at the Gilroy farms or at the grocery store? Explain.

1

Write an equation to represent the relationship between price and pounds of avocados at Gilroy farms.

1

How much would 8.5 pounds of avocados cost?

Review
Grocery—At Mancini Mart, 3 1/3 pounds of smelly cheese is $10 1/2. At Ms. P’s Place, 2 1/2 pounds of the same smelly cheese if $6 1/4.
1

Which store sells smelly cheese at a better value?

1

Write an equation for the cost of smelly cheese from Ms. P’s Place. How much does 3.5 pounds of cheese cost?

1

The graph below shows the weight of several objects in both pounds and ounce
Which statement BEST explains whether the graph represents a proportional relationship?

Proprotional Graphs: Writing Equations
Proportional Graphs: Tables
Proportional Graphs: Word Problems