Hello! I just need help with a few questions.

Question 1: The function shown in the graph is vertically stretched by a factor of 4 to produce a new graph. Which function represents the new graph?

1. f(x)= 4sin (2pi x)

2. f(x)= sin (4x)

3. f(x) = sin (8pi x)

4. f(x) 4 sin(x)

Question 2: For which intervals is the function negative? Select each correct answer.

1. (1,4)

2. (-3,1)

3. (-2.5, 2.5)

4, (-1.5, 4.2)

5. (-infinity, -3)

6. (4, infinity)

Question 3: What is the amplitude of the function graphed?

Question 4:

Which statement about the function is true?

1. f(x) and g(x) have the same y-intercept

2. f(x) and g(x) have a common x-intercept

3. f(x) and g(x) intersect at two points

4. f(x) is greater than g(x) for all values of x

I know these are quite a few questions so thanks so much to anyone who chooses to help! :)

Guest May 31, 2019

#3**+4 **

**1.**** **The function shown in the graph is vertically stretched by a factor of 4 to produce a new graph. Which function represents the new graph?

The graph in the picture has a period of 1 and amplitude of 1 , so it is a graph of y = sin(2π x)

y = sin(2π x) stretched vertically by a factor of 4 is y = 4sin(2π x)

hectictar May 31, 2019

#4**+3 **

Here is 1) https://web2.0calc.com/questions/need-some-helpp

The others have been posted and ansewered before also.....just try searching for them..... G'Luck !

ElectricPavlov May 31, 2019

#5**+2 **

**3. **What is the amplitude of the function graphed?

amplitude = maximum y-value - minimum y-value = 6 - (-2) = 6 + 2 = 8

hectictar May 31, 2019

#6**+1 **

2) the function is negative where the graph is below the x- axis

(-inf, 3) U (1,4)

ElectricPavlov May 31, 2019