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Algebra and Functions : Key Stage 5 (A2-Level) : Mathematics Content Knowledge


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Key Stage 5 (A2-Level)
Algebra and Functions
Question 1 of 9

1. How confident are you that you can explain and give examples of:

a. functions?


Example

Below are three different types of mapping between two variables X and Y:

Mapping

One-to-one and many-to-one mappings are known as functions.

y = x2 is a function because there is only one y-value for each value of x.

y2 = 9 – x2 is not a function because there are two possible values of y for each value of x.

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