Elijah got to invite 5 friends to his 5th birthday party, 6 friends to his 6th birthday party, and 7 friends to his 7th birthday party. Is the relationship between the number of guests and Elijah's age a linear relationship? yes no Now, justify your answer. The number of friends increased by the same amount each year. Elijah's age increased by 1 each year. Elijah got to invite more friends as he got older. The rate of change increased by 1 each year.