Question

Help??!! Will medal and fan
What are the amplitude, period, phase shift, and midline of f(x) = 2 sin(x + π) − 4?

Answer 1

Answer choices:

Amplitude: −4; period: 2 pi over 3; phase shift: x = −π; midline: y = 2

Amplitude: 2; period: 2 pi over 3; phase shift: x = 2π; midline: y = 2

Amplitude: 2; period: 2π; phase shift: x = −π; midline: y = −4

Amplitude: −4; period: 2π; phase shift: x = 2π; midline: y = −4

Answer 2

Okay, so according to the equation of asin(kt-c)+h

a = amplitude
c = phase shift
h = vertical shift
k = period

Answer 3

Do you know how to use that equation? Because this subject is NOT my forte, lol @sloppycanada

Answer 4

I was decent at it.

So according to the formula, a = amplitude. Since it's asin, we can automatically assume that in this case, the amplitude is 2.

Answer 5

Ok, so it would either be B or C, where do I take it from there? @sloppycanada
And can you help too? @Photon336

Answer 6

Generally speaking, the period of an equation of sin (unless otherwise given) is 2pi.

Answer 7

Alright, so I will go with C. Thanks!

Answer 8

Can you help me with another question? @sloppycanada

Answer 9

Compare the functions below:
f(x) = 2x2 + 3x − 4

Answer 10

And the last function to compare is:
h(x)
x y

−3 −8
−2 −6
−1 −4
0 −2
1 0
2 2
3 4

Answer 11

Which function has the largest y-intercept?
f(x)

g(x)

h(x)

All three functions have the same y-intercept.

Answer 12

I have no idea what it means by "largest" y-inctercept. I know that the y-intercept is where it crosses the y-axis. But I'm not sure what it means by "largest"

Answer 13

Which one has the highest y-intercept, as in the highest number as a y-intercept

Answer 14

Alright, I'm just gonna guess g(x) lol. Wish me luck XD

Answer 15

I'm actually thinking it's f(x) @Kimberly_PR