# Forming and solving inequalities (Part 1)

In this lesson, we will set up and solve inequalities in the context of area and perimeter of rectangles.

#### 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.What is the solution to the following inequality: x - 4 ≤ 10

1/3

Q2.What is the solution to the following inequality: 3x + 4 > 10

2/3

Q3.What is the solution to the following inequality: 4x + 4 ≥ 2x + 10

3/3

#### 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.What is the solution to the following inequality: x - 4 ≤ 10

1/3

Q2.What is the solution to the following inequality: 3x + 4 > 10

2/3

Q3.What is the solution to the following inequality: 4x + 4 ≥ 2x + 10

3/3

# 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.

#### Unit quizzes are being retired in August 2023

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

# Forming and Solving Inequalities (1)

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

Q1.This quiz will focus on one question. The rectangle below has a length x. Its height is 3cm longer. What is an algebraic expression for the height?

1/3

Q2.What is an expression for the perimeter of the rectangle?

2/3

Q3.The perimeter is greater than or equal to 18cm. What values can x take?

3/3

#### Unit quizzes are being retired in August 2023

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

# Forming and Solving Inequalities (1)

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

Q1.This quiz will focus on one question. The rectangle below has a length x. Its height is 3cm longer. What is an algebraic expression for the height?

1/3

Q2.What is an expression for the perimeter of the rectangle?

2/3

Q3.The perimeter is greater than or equal to 18cm. What values can x take?

3/3

# Lesson summary: Forming and solving inequalities (Part 1)

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Walk

On the spot:
Dance