Answer:
Then the determinant is 0.
Step-by-step explanation:
Determinant of ( 1 2 ) = 1*2 - 2*1 = 0
( 1 2 )
Answer:

Step-by-step explanation:

If
than
and 

<u>⇒ Switch sides:-</u>
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<u>⇒ Add 1 to both sides:-</u>
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And...

<u>⇒ Add 1 to both sides:-</u>
<u></u>

<u>⇒ Now, Combine the intervals:-</u>
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<u>OAmalOHopeO</u>
A.) Mark is correct as every increase in x of 2 equals a y increase of 4
It’s a function because it passes the vertical line test
Answer:
n= -3
Step-by-step explanation:
First, your're going to subtract from both sides
6n + 21 - 2 1= -3 - 2n - 21
Then simplify
6n = -2n - 24
Then add 2n on both sides
6n + 2n = -2n -24 + 2n
Simplify again
8n = -24
Then divide both sides by 8
8n/8 = -24/8
Then simplify and this is your answer
n= -3