Lesson Ratios & Proportional Relationships (CC2)

Lesson Ratios & Proportional Relationships (CC2)

For this lesson you will need paper and pencil to take notes.

On a piece of paper, Copy the following Notes

Submit the photo of your notes "Lesson Ratios and Proportion ships(CC2)"

Multiple Choice

What is a Ratio?

• Is a comparison of two quantities 
• A rate with a denominator of one
• It is when the only factor the numerator and denominator share is a one 
• Two decimals that can be multiplied

Multiple Choice

What mathematical operation do ratios involve?

• addition
• subtraction
• multiplication
• division

Multiple Choice

Rate with a denominator of 1

• Ratio

• Rate

• Unit Rate

Multiple Choice

Which of the following expresses a ratio?

• 2/3
• two-thirds
• 0.667
• 2.3

Multiple Choice

^{What is the ratio of total shapes to circles?}

• 3 : 4

• 4 : 3

• 7 : 3

• 3 : 7

Multiple Choice

Simplify the ratio of
35 : 14

• 5 : 2
• 2 : 5
• 3 : 1
• 35: 14

Multiple Choice

If there are 5 boys and 7 girls, write the ratio of girls to boys.

• 5 to 7
• 7 to 5
• 5 to 12
• 7 to 12

On a piece of paper, Copy the following Notes

Submit the photo of your notes "Lesson Ratios and Proportion ships(CC2)"

Multiple Choice

I paid $15.00 for 6 gallons of gasoline.

What was the price PER gallon?

• $0.40

• $9.00

• $2.50

• $0.90

Multiple Choice

If Justin can type 408 words in 4 minutes, how many words can he type per minute?

• 102 words per minute
• 100 words per minute
• 400 words per minute
• 412 words per minute

Multiple Choice

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound
• $5 per pound
• $35 per pound
• 0.125 pounds per dollar

On a piece of paper, Copy the following Notes

Submit the photo of your notes "Lesson Ratios and Proportion ships(CC2)"

Multiple Choice

The constant of proportionality can be found by finding the __________  _____________.

• unit rate
• ratio rate
• proportion answer
• rational number

Multiple Choice

What does k represent in the equation y = kx?

• constant for preparation
• constant of proportionality
• kangaroos
• krispy kreme

Multiple Choice

How do you find k? 

• x/y
• y/x
• y=kx
• x ⋅ y

Multiple Choice

A proportional relationship can be written as an equation in the form
____ = _____  _____

• y = k+x
• y = k-x
• y = kx
• y = k/x

Multiple Choice

What is the constant of proportionality?

• $3

• $4

• $2

• $9

Multiple Choice

What is the equation y=kx for the table?

• y=1/3x
• y=3x
• y=5x
• y=1/5x

Multiple Choice

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

• 1/14

Multiple Choice

Is this a proportional equation? Why?

• It is not proportional because it doesn't have anything added to it.

• It is proportional because it doesn't have anything added to it.

On a piece of paper, Copy the following Notes

Submit the photo of your notes "Lesson Ratios and Proportion ships(CC2)"

Multiple Choice

What makes a graph proportional?

• Straight Line

• The line goes through (0,0)

• Curvy line

• Straight line and passes through (0,0)

Multiple Choice

What is the constant of proportionality for the following graph?

• 80

• 20

• 40

• 160

Multiple Choice

The graph above shows the price of games in dollars.  Is the graph proportional and how do you know?

• The graph is proportional  because it is linear.
• The graph is proportional because it is linear and passes through the origin.
• The graph is not proportional because it does not pass through the origin.
• The graph is not proportional because it is not linear and it does not pass through the origin.

Multiple Choice

Does the graph show a proportional relationship? 

• No, it's a curved line
• No, it's a pretty line
• Yes, if you connect the line, it is kind of straight.
• Yes, the dots are pink

Multiple Choice

Does the graph show a proportional relationship?

• Yes, it's linear and goes through the origin

• Yes, it's linear

• Yes, it goes through the origin

• Yes, the line is pretty

On a piece of paper, Copy the following Notes

Submit the photo of your notes "Lesson Ratios and Proportion ships(CC2)"

On a piece of paper, Copy the following Notes

Submit the photo of your notes "Lesson Ratios and Proportion ships(CC2)"

Multiple Choice

Problem: If one meter is approximately 3.28ft , how many meters are in 20ft?

Once I read the problem, What should be my first step to solve this word problem?

• Set up a Proportion

• Draw a Diagram

• Annotate : Circle the numbers, Underline Question, Box Math Action Words

• Answer the Question as a Sentence

Multiple Choice

Problem: If one meter is approximately 3.28ft , how many meters are in 20ft?

What is the problem asking me to find?

• Calculate how many meters are in 20 if in 1 meter are 3.28 ft.

• Change 3.28 meters to feet

• Calculate feet if we have 20 meters

• Answer the Question as a Sentence

Multiple Choice

Problem: If one meter is approximately 3.28ft , how many meters are in 20ft?

What strategy can I use to solve this problem?

• Addition and Multiplication

• Set up a Proportion and cross products

• Subtraction and Division

• Multiplication

Multiple Choice

Problem: If one meter is approximately 3.28ft , how many meters are in 20ft?

Which proportion represents this problem?

• $\frac{3.28}{1}=\frac{20}{m}$

• $\frac{3.28}{20}=\frac{m}{1}$
  

• $\frac{3.28}{m\ \ }=\frac{20}{1}$
  

• $\frac{20}{3.28}=\frac{1}{m}$
  

Multiple Choice

Problem: If one meter is approximately 3.28ft , how many meters are in 20ft?

Which is the best way to solve the proportion?

Multiple Choice

Problem: If one meter is approximately 3.28ft , how many meters are in 20ft?

Which of the following represents the last step of solving a word problem?

• One meter is 3.28 feet

• There are 3.28 feet  are in 29 meters. 

• There are 6.10 meters in 20 feet.

• 6.10 meters

Multiple Choice

Which of the following is NOT true?

• Constant of Proportionality is x divided by y

• Constant of Proportionality is y divided by x

• constant of proportional is the same as unit rate

• A straight line that goes through the origin has a proportional relationship

Multiple Choice

22 miles per hour

• Ratio
• Rate
• Unit Rate

Multiple Choice

9 minutes to 5 miles

• Ratio
• Rate
• Unit Rate