Answer:
a candy is $4
you have a $20 bill
1 candy = 4
2 candies = 8
3 candies = 12
4 candies = 16
5 candies = 20
you can buy 5 candies for $20.
The slope is negative one
What’s da problem that u have?
Answer:

Step-by-step explanation:
Here,
f(x) = y

or , swapping x with y

now to solve for y we get

now we put f inverse x instead of y

I am done.