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https://media.discordapp.net/attachments/508061667226288140/525739462118998027/unknown.png?width=832&height=468

 Dec 21, 2018
 #1
avatar+18 
0

what is this for?

 Dec 21, 2018
 #2
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0

a quiz 

 Dec 21, 2018
 #3
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0

please help 

 Dec 21, 2018
 #4
avatar+7076 
+1

It's the 4th option.

Observing the oblique straight line for x < -2, we see its slope is 1.

Extend the straight line, and it meets y-axis at (0,5).

Therefore when x < -2, f(x) = x + 5.

 

On the other hand, when x >= -2, it is a horizontal straight line with y-intercept 4. 

Therefore when x >= -2, f(x) = -4.

 

This is why the 4th option is the answer.

 Dec 25, 2018

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