Constant of Proportionality

Presentation

•

Mathematics

•

7th Grade

•

Hard

Joseph Anderson

FREE Resource

5 Slides • 17 Questions

Constant of Proportionality

Math Goals

I can find the constant of proportionality in a table
I can write an equation using the constant of proportionality
I can use the equation to solve real world examples

Multiple Choice

Does the table show a proportional relationship?

Yes

Multiple Choice

Does the table show a proportional relationship?

Yes

Multiple Choice

What is the correct way to find the constant of proportionality?

$\frac{x}{y}$

$\frac{y}{x}$

Constant of Proportionality

remember, in order to find the constant of proportionality you need to do:

y\div x\

\frac{y}{x}

Multiple Choice

The table represents the price of McDonald's Value Meals. What is the constant of proportionality?

5.25

10.50

Multiple Choice

What is the constant of proportionality?

1/3

1/5

Multiple Choice

What is the constant of proportionality for this table?

$1/9 per hour

$9 per hour

$8 per hour

Fill in the Blanks

The constant of proportionality for this table is...

Type answer...

Writing equations for tables

first find the constant of proportionality
the format of the equation is y = kx
replace the k value with the constant of proportionality

Multiple Choice

Determine the constant of proportionality for the table. Express your answer as y = kx

y = 1/3x

y = 33x

y = 33

Multiple Choice

Determine the constant of proportionality for the table. Express your answer as y = kx

y = 33x

y = 0.003x

x = 33y

33k

Multiple Choice

Determine the constant of proportionality for the table. Express your answer as y = kx

y = 30k

y = 30x

y = 0.03x

y = 9x

Multiple Choice

Determine the constant of proportionality for the table. Express your answer as y = kx

y = 1/2x

x = 1/2y

y = 2x

k = x

Multiple Choice

Write the equation for the table given.

y = 16x

y=8x

y=12x

Multiple Choice

Write an equation for this relationship.

y = 18x

y = 18.50x

y = 22.50x

y = 22x

Fill in the Blanks

Given the proportional equation, y = 2.5x what is the value of y is x=5

Type answer...

Fill in the Blanks

Given the proportional equation y = 2.5x, what is the value of x if y = 37.5?

Type answer...

Multiple Choice

A school is raising money by selling Care Packages for $7.50 each. How much will they raise if they sell 120?

$850

$900

$950

$1200

Review of Math Goals

I can find the constant of proportionality in a table
I can write an equation using the constant of proportionality
I can use the equation to solve real world examples

Open Ended

Explain what you learned about the constant of proportionality.

Type response here

Constant of Proportionality

Show answer

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