Algebra and Functions : Key Stage 5 (A2-Level) : Mathematics Content Knowledge
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:
Below are three different types of mapping between two variables X and Y:
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.
Related information and resources from other sites