What are four different ways of representing functions? how can you tell if a relationship is a function?

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

How do you determine whether a relationship represented as as graph is linear or nonlinear

What is the absolute value of the complex number -4-sqrt2i