Answer:
Graph A
Step-by-step explanation:

Its mean graph should intersect x axis at x = 7 and x = - 1. This everything is satisfied by graph A.
Answer:
Not a function
Step-by-step explanation:
Fails the vertical line test
Answer:
2:3
Step-by-step explanation:
2 would represent the Fraction of girls 3 would represent the fraction of boys.