Answer: e?
Step-by-step explanation:
Answer: a c d
Step-by-step explanation: they are functions because the line is intersecting points as well as being squared cubes and a is a absolute value function
For this case we have the following equation:

We must clear the variable "x":
We multiply by 2 on both sides of the equation:

We divide by h on both sides of the equation:

We subtract "a" on both sides of the equation:
Answer: