# Finding solutions to problems with two variables

In this lesson, we will be discussing how to work systematically to find all possibilities for problems with two variables.

#### 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 expression would represent the following problem: The cooking time for roast beef is 30 minutes for every kg plus an additional 15 minutes.

1/4

Q2.Which expression would represent the following problem: The cost of a photo album book is £2.50 for binding and printing with an additional cost of 15p per photograph.

2/4

Q3.Which expression would represent the following problem: A singer makes money from selling music. They pay a one-off fee of £25.00 to Oak-Tunes for marketing and distribution costs and receive 55p for each copy of the album sold.

3/4

Q4.Instead of writing 5 x a in an algebraic expression, what could I write instead?

4/4

#### 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 expression would represent the following problem: The cooking time for roast beef is 30 minutes for every kg plus an additional 15 minutes.

1/4

Q2.Which expression would represent the following problem: The cost of a photo album book is £2.50 for binding and printing with an additional cost of 15p per photograph.

2/4

Q3.Which expression would represent the following problem: A singer makes money from selling music. They pay a one-off fee of £25.00 to Oak-Tunes for marketing and distribution costs and receive 55p for each copy of the album sold.

3/4

Q4.Instead of writing 5 x a in an algebraic expression, what could I write instead?

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.

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

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

# Finding solutions to problems with two variables

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

Q1.3f + g = 15. Which of the following pairs of numbers would work?

1/4

Q2.5a - 2b = 8. Which of the following pairs of numbers would work?

2/4

Q3.3c + 2d = 20. Which pair of numbers does does NOT work with this equation?

3/4

Q4.6m - 3n = 15. Which pair of numbers does does NOT work with this equation?

4/4

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

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

# Finding solutions to problems with two variables

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

Q1.3f + g = 15. Which of the following pairs of numbers would work?

1/4

Q2.5a - 2b = 8. Which of the following pairs of numbers would work?

2/4

Q3.3c + 2d = 20. Which pair of numbers does does NOT work with this equation?

3/4

Q4.6m - 3n = 15. Which pair of numbers does does NOT work with this equation?

4/4

# Lesson summary: Finding solutions to problems with two variables

## Time to move!

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

For 5 mins...

Move around:
Walk

On the spot:
Chair yoga