Question 252218
a) Just pick a word that has a length of 1. So any letter will do.



b) Since each word has a specific length (and only ONE specific length), this means that the relation L is indeed a function. If L mapped say the word 'the' to the numbers 3 AND 4 (say hypothetically that 'the' was 3 characters and 4 characters long), then L wouldn't be a function since that input yielded two outputs.



So in general, if every input into the relation yields only one output, then that relation is a function.