The graph of a linear function is shown on the grid what is the rate of change of y with respect to x for this function
A) 7/9
B) -7/9
C)3/4
D)--3/4

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?