Answer:
yes it is a function
Step-by-step explanation:
You have to take the numbers and see if any of them are the same in the X column if their are some of the same numbers you only write the number once. than you connect the numbers to the given output. If any numbers have 2 outputs it is not a function.
Answer:
hi how are you wanna be friend
Step-by-step explanation:
Is there a picture? there's not enough info
the difference from 40000 to the future value in 2020, namely 5 years later is simply the yield or interest amount.

The slope is undefined because you need a y intercept as well.