What makes a rule a function?

• A rule is a function if any number on the input side corresponds to exactly one number on the output side. • A function is a rule where you know what the output would be if you know the input.

¨A rule is a function if every number on the input side goes to exactly one number on the output side. • A function is a rule where, if you know the input, you know what the output is going to be.¨

hi,

3. 12.15, you are correct.

4.2.01, your first digit is correct,

hope this !

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following