What is a proportion? give an example with your description

A proportion is a part of an amount compared to the total amount.

Example:
Lets’s say you’re awake 16 hours in a day
You spend 8 hours at school
And the rest of your time changes day to day.

Therefore the proportion of time you spend at school when you’re awake is 8/16 or simplifying, 1/2.

the output is 0

Step-by-step explanation:

y = 2(-2) + 4 = -4 + 4 = 0