# Sketching quadratics

In this lesson, we will learn how to sketch quadratics using intercepts of the y and x axis.

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.

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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.Fill in the gap: ________ is the opposite of expanding.

1/7

Q2.Factorise x² + 14x + 24.

2/7

Q3.Cala says that you cannot factorise x² -9x + 8 because there does not exist a pair of factors for 8 that add to give a negative number. Is she correct?

3/7

Q4.Factorise x² - 3x - 10.

4/7

Q5.Factorise x² - 9x + 14.

5/7

Q6.Factorise x² - 36.

6/7

Q7.A quadratic expression x² + bx - 20 can be factorised. Find all the possible values for b when b is negative.

7/7

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.Fill in the gap: ________ is the opposite of expanding.

1/7

Q2.Factorise x² + 14x + 24.

2/7

Q3.Cala says that you cannot factorise x² -9x + 8 because there does not exist a pair of factors for 8 that add to give a negative number. Is she correct?

3/7

Q4.Factorise x² - 3x - 10.

4/7

Q5.Factorise x² - 9x + 14.

5/7

Q6.Factorise x² - 36.

6/7

Q7.A quadratic expression x² + bx - 20 can be factorised. Find all the possible values for b when b is negative.

7/7

# 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.

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

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

# Sketching Quadratics Quiz

Have a go at the following questions. Good luck!

Q1.Select the words that best fill in the gaps in order: The __________ is where the curve crosses the y axis, when _______.

1/6

Q2.What are the coordinates of where y= x² + 14x + 24 crosses the y axis?

2/6

Q3.Where does y = x² - 3x - 10 cross the y axis?

3/6

Q4.Which graph could be a sketch of y=(x+4)(x-3)?

4/6

Q5.Which graph could be a sketch of -x² + 3x - 2? Hint Try out some coordinates to check!

5/6

Q6.Zaki says y = x² + 1 will never cross either axes. Is that correct?

6/6

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:

# Sketching Quadratics Quiz

Have a go at the following questions. Good luck!

Q1.Select the words that best fill in the gaps in order: The __________ is where the curve crosses the y axis, when _______.

1/6

Q2.What are the coordinates of where y= x² + 14x + 24 crosses the y axis?

2/6

Q3.Where does y = x² - 3x - 10 cross the y axis?

3/6

Q4.Which graph could be a sketch of y=(x+4)(x-3)?

4/6

Q5.Which graph could be a sketch of -x² + 3x - 2? Hint Try out some coordinates to check!

5/6

Q6.Zaki says y = x² + 1 will never cross either axes. Is that correct?

6/6

# Lesson summary: Sketching quadratics

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## Time to move!

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

For 5 mins...

Move around:
Jog

On the spot:
Chair yoga