Answer:
-69
Step-by-step explanation:
6(-4) + (-5)9
= -69

<u>Step-by-step explanation:</u>
Here we have , cos x = -4/5 ( corrected as given -45 which is not possible ) ,
180° < x < 270° i.e. in third quadrant . We need to find tan(2x) . Let's find out:
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⇒ 
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, since in third quadrant .
remains same .
Now , 
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⇒ 
⇒ 
⇒ 
Therefore,
.
ANSWER

EXPLANATION
The point-slope equation of a straight line is given by:

Where m is the slope.
The line goes through (-5,4) and (1,6).
The slope of this line is,


The point-slope equation is

The second option: The student should have distributed and written -2x+5, not -2x-5.
That’s because the two negatives make a positive when multiplying/distributing.