<u>Part A</u>
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and 
<u>Part B</u>
Diagonals of a parallelogram bisect each other, so

Solving by substitution,

Multiplying both sides by 3,

So, 
<u>Part C</u>
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Answer:
No
Step-by-step explanation:
Definition of a function is: a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output
Here we have more than one output for one input:
- x=-1 => y= -1, 0, 1
- x= 1 => y= 1, 2, 3
So this is not a function
Answer:
9:30 am
Step-by-step explanation:
- Add 30 minutes + 30 minutes to get 60 minutes, which is one hour.
- Add 1 hour to 1 hour and 45 minutes to get 2 hours and 45 minutes.
- Subtract 2 hours from 12:15 pm, to get 10:15.
- That'll leave you with just 45 minutes left. To make it easier than subtract 45 minutes from 10:15, subtract 15 minutes from 10:15, to end up at 10:00 am.
- 45 minutes - 15 minutes = 30 minutes, so then you subract 30 minutes from 10:00 am, and you end up at 9:30 am, which is your final answer
Answer:
Step-by-step explanation: