Substitute a negative term into a formula

In this lesson, we will be substituting negative values into a variety of formulae, and calculating the result.

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.

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.What is the value of 7a when a = 5?

1/4

Q2.Use the formula C = 4g + 7 to find the value of C when g = 8

2/4

Q3.Use the formula C = 4g + 7 to find the value of g when C = 19

3/4

Q4.Use the formula R = 25 - 4g to find the value of R when g = 5

4/4

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.

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.What is the value of 7a when a = 5?

1/4

Q2.Use the formula C = 4g + 7 to find the value of C when g = 8

2/4

Q3.Use the formula C = 4g + 7 to find the value of g when C = 19

3/4

Q4.Use the formula R = 25 - 4g to find the value of R when g = 5

4/4

Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

  • Click "Close Video"
  • Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

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.

Quiz:

Substitute a negative term into a formula

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Using the formula r = 5t - 3 find the value of r when t = -2

1/4

Q2.Using the formula r = 5t - 3 find the value of t when r = -7

2/4

Q3.

3/4

Q4.

4/4

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.

Quiz:

Substitute a negative term into a formula

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Using the formula r = 5t - 3 find the value of r when t = -2

1/4

Q2.Using the formula r = 5t - 3 find the value of t when r = -7

2/4

Q3.

3/4

Q4.

4/4

Lesson summary: Substitute a negative term into a formula

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