# Find the equation of a straight line using y=mx+c

In this lesson, we will find the equation of a straight line using y=mx+c. We will use coordinates taken from a plotted straight line to help us calculate the gradient, then use a method of substitution to find the equation of the line.

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.Work out the gradient of the line.

1/3

Q2.Work out the gradient of the line.

2/3

Q3.Work out the gradient of the line passing through the points (-5, -9) and (1, 3).

3/3

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.Work out the gradient of the line.

1/3

Q2.Work out the gradient of the line.

2/3

Q3.Work out the gradient of the line passing through the points (-5, -9) and (1, 3).

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.

Quiz:

# Find the equation of a straight line using y=mx+c

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

Q1.Work out the equation of the line.

1/3

Q2.Work out the equation of the line.

2/3

Q3.Find the equation of the straight line that has a gradient of 4 and passes through the point (1, 10)

3/3

Quiz:

# Find the equation of a straight line using y=mx+c

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

Q1.Work out the equation of the line.

1/3

Q2.Work out the equation of the line.

2/3

Q3.Find the equation of the straight line that has a gradient of 4 and passes through the point (1, 10)

3/3

# Lesson summary: Find the equation of a straight line using y=mx+c

## 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