Proportional Relationships

Proportional Relationships Practice

Poll

True or False?

Two variables have a proportional relationship if their ratio (or quotient) is always the same?

• True

• False

TRUE.

Page 28 in your workbook states:

(go to next page)

Poll

According to the previous slide (don't look back yet :)), to find the constant....

• m + n =

• m ^÷ n =

m ÷ n = constant

or

m/n = constant

Look back at the 4th slide now!

DON'T FORGET!

The constant, or unit rate, is known

as the

CONSTANT OF PROPORTIONALITY!

This is also stated on slide 4.

LET'S PRACTICE!

Multiple Choice

Find the ratio of the cost to the pounds for each of the three columns. This is the constant of proportionality.

• 2

• 3

• 1.50

• 2/3

• none (not proportional)

Multiple Choice

Find the ratio of the votes for Victor to the number of votes for Faye for all columns. This is the constant of proportionality.

• 20

• 30

• 0.03

• 9

Multiple Choice

Find the ratio of the cost of the chicken to the pieces of the chicken for all columns. This is the constant of proportionality.

• 1/2

• 4

• 2

• x

Multiple Choice

According to page 39 in your workbook, "When two variables are proportional, they have a constant ratio or constant quotient."

• True

• False

LET'S PRACTICE

PROPORTIONAL RELATIONSHIPS

IN

TABLES AND GRAPHS!

Multiple Choice

In this proportional table, Dan charges $15 per hour for walking dogs. What is the missing number in the table?

• 50

• 60

• 75

• 82.5

Multiple Choice

Which statement best describes the relationship between x and y in the table?

• Proportional
• Not Proportional

Multiple Choice

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

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

Multiple Choice

What makes a graph proportional?

• Straight

• The line goes through the origin

• Curvy line

• Straight line and the line passes through the origin

Multiple Choice

Is this table proportional or non-proportional?

• Proportional because the Constant of Proportionality is the same for each column

• Non-Proportional because the Constant of Proportionality is not the same for each column

Multiple Choice

What is the constant of proportionality?

• 8
• 16
• 24
• 2

Multiple Choice

Which statement best describes the relationship of x and y in the table?

• Proportional
• Not Proportional

Multiple Choice

In a proportional relationship, the ratios...

• are all equal

• are not equal

Multiple Choice

Proportional or Non-Proportional?

• Non-Proportional

• Proportional

Multiple Choice

Is this graph proportional?

• Yes
• No

Multiple Choice

Is the graph proportional or non proportional?

• proportional
• non proportional

Multiple Choice

If the line on the graph does not pass through the origin, will the graph be Proportional or Non-Proportional?

• Proportional

• Non-Proportional

Multiple Choice

Is the graph proportional or nonproportional?

• proportional
• non proportional