Answer:
substitute the input (the given number or expression) for the function's variable (place holder, x). Replace the x with the number or expression.
Example:
f(x)=3x-5 and f(4)
f(x)=3(4)-5
f(x)=12-5
f(x)=7
final answer is (4,7)
1)x=2. 2)x=5/2
Step-by-step explanation:
Steps in pic below
Answer: Your answer is the third one, a function assigns to each input exactly one output.
If you have a true function, there will only be one output for each input, if you had more than one, it isn't a function.
