1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sweet [91]
3 years ago
11

Which function will have a y-intercept at -1 and an amplitude of 2?

Mathematics
2 answers:
Anna35 [415]3 years ago
6 0
The first and 3rd choices are just sin and cos waves, with amplitude of 1 .
So it has to be the 2nd or 4th choice.

The y-intercept is the point on the graph where x=0.
So if the y-intercept is -1, that just means that  f(0)=-1 .
So let's test the two choices:

                                   f(x) = -2 sin(x) - 1

                                   f(0) = -2 sin(0) - 1
sin(0) = 0  so
                                   f(0) = -2 (0)    - 1 .
That looks like it works.
Just to be sure, let's check the other possible choice.

                                  f(x) = -2 cos(x) - 1

                                 f(0) = -2 cos(0) - 1

cos(0) = 1     so         f(0) = -2 (1)      - 1  =  -3 .  

Beautiful !  The y-intercept of choice-2 is -1,
and the y-intercept of choice-4 is  -3.  The answer is choice-2.
baherus [9]3 years ago
5 0

Answer:

the answer is b

Step-by-step explanation:

Im just typing this so it knows that I properly explained

You might be interested in
You and three friends own a paint shop. The shop's profit was $536 in the first month. You always divide the profits equally. In
d1i1m1o1n [39]
C. $360 $536+$360=$896 $896/4= $360
3 0
3 years ago
Using the credit card from question 13, if you have a good credit rating, how much must you pay at the end of the month to get t
Reptile [31]
Where is the credit card?
8 0
3 years ago
Read 2 more answers
you are going to sell your cakes for £2.25 each. how much money will you make if sell all of your cakes
pishuonlain [190]
How many cakes do you have, just get a calculator and multiply the number of cakes by 2.25 to get the total amount of money.
5 0
3 years ago
Tel wether the relationship is proportional relationship. Explain why or why not.
dem82 [27]
Yes because it is linear, also if you set up the proportion 2/4=1/2 they are equal.
8 0
3 years ago
<img src="https://tex.z-dn.net/?f=x%20%7B%7D%5E%7B2%7D%20%20-%202ax%20%2B%202%28a%20%7B%7D%5E%7B2%7D%20%20-%206%29%20%3D%200" id
pentagon [3]

answer

- {4a}^{2}  + 48

5 0
3 years ago
Other questions:
  • Which expression correctly represents eight times the difference of 4 and a number
    6·1 answer
  • Polygon ABCD is the result of a translation of polygon EFGH . AB¯¯¯¯¯ is parallel to DC¯¯¯¯¯ in the pre-image. Drag the answers
    14·2 answers
  • I need help plz..... ☺
    10·2 answers
  • Solve for x. Picture attached <br><br> Show your work please!!!
    15·2 answers
  • BRAINLIEST AND 30 POINTS!!! HURRY!!
    13·2 answers
  • If you flip a coin 4 times, how many times it is most likely to land with heads up?
    10·1 answer
  • Which of the following graphs represents a function?
    8·1 answer
  • Find the smallest integer such that five less than twice the integer is greater than 23
    7·1 answer
  • Simplify the expression below. Show all steps. <br><br> √4x^2 ÷ 3y
    13·1 answer
  • Please help and show work it helps a lot thanks
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!