Answer:
B
Step-by-step explanation:
In a function, each input (x) must match with one output (y). So, if there are two sets of coordinates with the same y value, that's not a function.
The answer should be true
Answer: second option
Step-by-step explanation:
To find the inverse function of the given function f(x):

You need to:
Substitute
into the function:

Now, you need to solve for "x", to do this, you must divide both sides of the function by 2:

Now, replace "x" with "y" and replace "y" with "x":

Therefore, substituting
you get:
or 