Solving Quadratic Equations Graphically

In this lesson, we will interpret graphs of quadratic equations in order to find their solutions. We will investigate the key features of quadratic graphs that help us identify their solutions.

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!

Q1.1. True or False, here is the graph of 2x²+ 1?

1/4

Q2.Here are four quadratic graphs. The red curve shows y = x². Which equation is the yellow curve labelled i?

2/4

Q3.3. Here is a table of values for y = 3x²– 1 Which number is missing?

3/4

Q4.4. Which option is true for f(x)= 0.5x² - 1 ?

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!

Q1.1. True or False, here is the graph of 2x²+ 1?

1/4

Q2.Here are four quadratic graphs. The red curve shows y = x². Which equation is the yellow curve labelled i?

2/4

Q3.3. Here is a table of values for y = 3x²– 1 Which number is missing?

3/4

Q4.4. Which option is true for f(x)= 0.5x² - 1 ?

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:

Solving Quadratic Equations Graphically

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

Q1.

1/4

Q2.

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:

Solving Quadratic Equations Graphically

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

Q1.

1/4

Q2.

2/4

Q3.

3/4

Q4.

4/4

Lesson summary: Solving Quadratic Equations Graphically

It looks like you have not completed one of the quizzes.

To share your results with your teacher please complete one of the quizzes.

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