Question

The relation pairing the LRN to students is it a one to one function?
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Answer 1

The relation pairing the LRN to students is it a one to one function is undefined and cannot be determined.

Explanation:

• The Learner Reference Number (LRN) is a permanent twelve (12) digit number which the pupil, student, or learner shall keep while completing the basic education program, regardless of transfer to another school or learning center in the public or private sector, and promotion/moving up to the secondary level.
• A function for which every element of the range of the function corresponds to exactly one element of the domain is called as a one-to-one function.
• Each real number has a unique perfect square. Therefore, the relation is a function.
• A one-to-one function is a function of which the answers never repeat. For example, the function$f(x) = x + 1$ is a one-to-one function because it produces a different answer for every input.
• An easy way to test whether a function is one-to-one or not is to apply the horizontal line test to its graph.