Answer:
D. None are true.
Explanation:
f(x)=-2x-1
g(x)=-1/2x+1/2
perpendicular( inverse ) slope = -1
-2*-1/2 = 1, so not perpendicular.
III is wrong.
So, it can't be C.
Since they are not perpendicular, if you place x in one, the other will be wrong, same with the other, so not A or B.
The correct answer is D.
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