Question

Help please

Answer 1

C

Answer 2

@Vocaloid

Answer 3

good

Answer 4

A

Answer 5

you're close, just check the direction of the graph

it's increasing through the point (0,2) so this is probably a positive sin not a negative sin

so D

Answer 6

Not sure about this

Answer 7

period = 2pi/ (the coefficient of x)

Answer 8

3

Answer 9

good, so period = 3 = your answer

Answer 10

D

Answer 11

close but not quite, the normal cos fluctuates between 1 and -1, check the range on this graph

Answer 12

B

Answer 13

notice how it's fluctuating between -0.5 and 0.5, the period is still 2pi as it usually is, so there's no horizontal stretch here

Answer 14

C

Answer 15

awesome

Answer 16

True

Answer 17

good

Answer 18

A

Answer 19

awesome

Answer 20

False

Answer 21

hm, that's not quite right, just compare

4sin(x+3) and 4sin(x)

is it a shift 3 units to the left or nah?

Answer 22

oh true becase of the shift

Answer 23

awesome

Answer 24

A

Answer 25

C

Answer 26

that's not quite right, flipping across the x-axis would be a vertical flip, remember how to get those?

Answer 27

yeah, C is the better answer, well done

Answer 28

-3

Answer 29

amplitude is always positive

Answer 30

3

Answer 31

good, 3 not -3

Answer 32

A

Answer 33

good