Answer:
In 5y, 5 is a coefficient.
9 and 6 are like terms.
Explanation:
In 5y, 5 is a coefficient of 5.
5y is a variable. y is the factor.
9 and 6 are like terms. True! They are all integers.
In (5y + 3), 5y is not a constant but a variable.
(5y + 3) is the sum of two terms i.e 5y and 3. It cannot be written as sum of three terms.