Pls help I’ll brainlest and add extra points

How to determine whether two known pairs of points are on the same line.

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?