PLEASE HELP I WILL GIVE 100 points Using the drawing below to answer the questions that follow

Part A what is the scale factor used when going from the larger rectangle to smaller one?

Part B
What is the length of missing side?

PLEASE HELP

Complete the equation of the live through (-1,6) (7,-2)

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?

Can you me with this question? i'll reward *30 points i just need with this one question so that i could solve the others. * edit: i originally set up the question to reward 30 points, but for some reason i can only reward 15. if you don't get 30, then i'm sorry. i'm still kind of new to this site