The sum of 4/15 and 3/75 multiplied to 4/15

Whats the name of the vertical axis

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.