In Question 1, what do you notice about the x-coordinates before and after a horizontal stretch? What do you notice about the y-coordinates before and after a vertical stretch? Express your answer in terms of nx and ny

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?