In this lesson you will learn how to sketch quadratics.

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!

## Question 7

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

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!

## Question 7

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.

Quiz:

Have a go at the following questions. Good luck!

## Question 6

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

Quiz:

Have a go at the following questions. Good luck!

## Question 6

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

### 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

### Take part in The Big Ask.

The Children's Commissioner for England wants to know what matters to young people.