Solve for x and y. they both have to be the same number for each equation

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)

What is the radius of the cone in the diagram? round your answer to the nearest whole number

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?