Check my answer? Horizontal middle line? Graph attached

Question

Check my answer?  Horizontal  middle line?  Graph attached

anonymous · Answer

I got b, can anyone confirm?

amistre64 · Answer

i dont even know what a horizontal middle refers to.

horizontal means left to right, and middle means between .... but in reference to the optons nothing comes to mind.

amistre64 · Answer

how does you material define the term?

anonymous · Answer

@amistre64 I think where there's symmetry across the axis
Like if you were to flip it at that point it would be mirrored, and if you were to theoretically stack it on top of the other side of the graph it would look the exact same

jtvatsim · Answer

Hmm... not sure, cuz then D would also be a valid choice by that definition...

jtvatsim · Answer

Yeah, I don't want to confuse the question even more... but maybe "horizontal middle of the period" is referring to the asymptotes (one of which is at x = pi/6).

anonymous · Answer

@jtvatsim D is only true if we're talking about the Y axis
This question is about the x

jtvatsim · Answer

How is D any different than B, I guess would be my question?