Question

Can someone check my answer please?

My answer is A, but I just need someone to double check for me, thank you!(:

@mathstudent55 @mrnood

Answer 1

The period is the time (x axis) distance between 2 similar points on the periodic function (such as the low spikes)
You have correctly counted that=4

Since a is th eonly answer with 4 as the period it seems correct.

I am not too sure about the amplitude of non symettrical forms - it is normally the height from 'base to peak' which I would read as 4 in your graph - but that does not correspond with answer a

Answer 2

Wait, but if 4 is the correct answer for the periodic function, do you think it would be option B? Because the line going down is closest to negative four?

Answer 3

My best answer would be

Period = 4
Amplitude = -4

but that doesn't correspond with your answer.

I don't think period CAN be negative

Answer 4

It implies the pairs are in the order (period,amplitude)

Answer 5

Which makes me think it is option A because as you said and from what I learnt, the period cannot be negative.

Answer 6

@MrNood What do you think?

Answer 7

BUT
"Amplitude is the distance from the rest position to the crest position"

which is -4 in your case...

sorry - I don't see a clear answer here...how can amplitude be 2?