Graphs: Slope of a Line

Lesson Objective
Learn how to calculate the slope of a line.
A straight line has several properties that you can measure or calculate. One of the property is the slope.

In this lesson, you'll get to know how to formulate and calculate the slope of a line.

Also, note that  the slope is also known as the gradient.

Study Tips

This lesson is divided into 2 parts. The first part is to help you familiarize with the terms 'change in x' and change in y'.

The second part is the actual lesson on the slope of a line.
Tip #1
When calculating the change, always 'run' first and then 'climb' up. The math video will illustrate more.
Tip #2
Know how to calculate the 'change in x' and 'change in y'  first before attempting to calculate the slope. This minimizes mistake.
Tip #3
Now, what is the definition for the slope of a line? It is defined as the ratio of the 'change in y' to the 'change in x'. This simply means that you just divide 'change in y' with 'change in x' to find the slope.
Now, watch the following math videos to know more.

Math Video

Lesson on 'change in y' and 'change in x'. Click play to watch
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Transcript for the 'change in x' and 'change in y' lesson
Lesson on the slope of a line. Click play to watch.
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Transcript for the slope of a line lesson

Practice Questions & More

Multiple Choice Questions (MCQ)
Now, let's try some MCQ questions to understand this lesson better.

You can start by going through the series of questions on slope of a line or pick your choice of question below.
1. Question 1 on 'change in x' and 'change in y'
2. Question 2 on calculating the slope of a line