How is showing fractions with models and a number line are alike and different

Extra points! find the missing dimension! need asap

Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.

What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points