Introduction to Mapping
Learn what a mapping is and how to visualise it using tables and graphs. Let’s get started! 🚀
Video Lesson
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Flashcards
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🛎️ What Is a Mapping?
- A mapping shows how one value links to another value. We say X is mapped to Y using an arrow.
- For example, time is mapped to speed, so each time value has a corresponding speed.
🛎️ How to Visualise Mapping?
- You can use a table and a graph to visualise the mapping.
- A table shows exactly which X value matches each Y value.
- A graph shows visually how Y changes when X changes.
🛎️ Using Mappings in Real Life
- Categories, such as types of balls, can be mapped to weights.
- Each input and its corresponding output can be shown in a table or graph.
- When the input is discrete categories, you should not join the points with a line.
Practice Questions
Test your understanding
If the time (hours) is mapped to speed (km/h), which is the input quantity?
Correct! 🎉 +10 pointsNot quite right
Time is the input quantity, and speed is the output quantity in this mapping.
Which of the following is an example of a mapping?
Correct! 🎉 +10 pointsNot quite right
Mapping describes the relationship between two quantities, so all of these are examples of mappings.
Which of the following should not be represented by a connected line on a graph?
Correct! 🎉 +20 pointsNot quite right
The weights of different types of balls should not be connected by a line because they represent distinct, unrelated categories.
After 3 hours of driving, the car's speed was 100 km/h. What does this mean in mapping terms?
Correct! 🎉 +20 pointsNot quite right
In mapping, time is the independent variable (input), and speed is the dependent variable (output). For this example, the input 3 is mapped to the output 100 km/h.
The graph of a car's speed shows a flat horizontal line between the 3rd and 5th hours. What does this mean?
Correct! 🎉 +20 pointsNot quite right
A flat horizontal line on a speed-time graph indicates that the car maintained a constant speed.
A table shows hours and speeds. Which statement is true?
Correct! 🎉 +30 pointsNot quite right
The speed increased for the first 3 hours, stayed constant between 3 and 4 hours, and then decreased in the 5th hour.
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