The constant of proportionality

In this lesson, we will learn about the the term 'constant of proportionality' and how it relates to how proportion works.

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Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which graph does not show to direct proportion?

1/5

Q2.Which graph shows direct proportion?

2/5

Q3.Which table does not shows direct proportion?

3/5

Q4.Which table does not shows direct proportion?

4/5

Q5.x and y are directly proportional as shown in the graph. What is the value of y when x = 10?

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which graph does not show to direct proportion?

1/5

Q2.Which graph shows direct proportion?

2/5

Q3.Which table does not shows direct proportion?

3/5

Q4.Which table does not shows direct proportion?

4/5

Q5.x and y are directly proportional as shown in the graph. What is the value of y when x = 10?

5/5

Video

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Worksheet

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Constant of proportionality.

Exit Quiz

Q1.Complete the sentence: When two quantities are in ........................ , when one variable doubles, the other doubles too.

1/8

Q2.Complete the sentence: When two quantities are in direction proportion, when one variable is zero, the other is .............

2/8

Q3.x and y are in direction proportion. When x is 4 y is 11. What is the value of y when x = 12?

3/8

Q4.The cost of T shirts online at £12 each. The postage charge is £3.50 per order. How much will it cost to order 2 T shirts?

4/8

Q5.Think about the previous question: Are the number of T-shirts and the cost in direct proportion?

5/8

Q6.Which table shows direct proportion?

6/8

Q7.What is the constant of proportionality in the table below?

7/8

Q8.What is the constant of proportionality between m and n?

8/8

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Constant of proportionality.

Exit Quiz

Q1.Complete the sentence: When two quantities are in ........................ , when one variable doubles, the other doubles too.

1/8

Q2.Complete the sentence: When two quantities are in direction proportion, when one variable is zero, the other is .............

2/8

Q3.x and y are in direction proportion. When x is 4 y is 11. What is the value of y when x = 12?

3/8

Q4.The cost of T shirts online at £12 each. The postage charge is £3.50 per order. How much will it cost to order 2 T shirts?

4/8

Q5.Think about the previous question: Are the number of T-shirts and the cost in direct proportion?

5/8

Q6.Which table shows direct proportion?

6/8

Q7.What is the constant of proportionality in the table below?

7/8

Q8.What is the constant of proportionality between m and n?

8/8

Lesson summary: The constant of proportionality

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