Which relation is not a function?

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.