you don't have to pay the volleyball player the same amount that you pay the quarterback.
This is a very good article on the subject:
https://www.womenssportsfoundation.org/advocacy/what-is-title-ix/
"There are three parts to Title IX as it applies to athletics programs: (1) effective accommodation of student interests and abilities (participation), (2) athletic financial assistance (scholarships), and (3) other program components (the “laundry list” of benefits to and treatment of athletes). The “laundry list” includes equipment and supplies, scheduling of games and practice times, travel and daily per diem allowances, access to tutoring, coaching, locker rooms, practice and competitive facilities, medical and training facilities and services, publicity, recruitment of student athletes and support services.
Title IX compliance is assessed via a total program comparison. In other words, the entire men’s and women’s programs are to be compared, not just one men’s team to the women’s team in the same sport. This broad comparative provision was intended to emphasize that Title IX does not require the creation of mirror image programs. Males and females can participate in different sports according to their respective interests and abilities. Thus, broad variations in the type and number of sports opportunities offered to each gender are permitted.
Title IX does not require equal expenditure of funds on male and female athletes. The only dollar for dollar expenditure requirement is in the athletic financial assistance area, where schools are required to spend dollars proportional to participation rates. Thus, if $200,000 is awarded in athletic scholarships and the participation ratio of male to female athletes is 50/50, $100,000 must be awarded to female athletes and $100,000 must be awarded to male athletes. In other areas, the equality standard is one of equal opportunity. "