Aline is perpendicular to y= 1/2x-9 and intercepts the point (3,2) what is the perpendicular line

What is a possible solutions of the x> 3?

What is the slope of the equation y =

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?