Question

PLEASE HELP ASAP!

Answer 1

To vertically strech or shrink a function, multily the whole function by the factor taht you want to strech or shrink it by

to horizontally strech or shrink a function, multiply every x by the factor you want to strech or shrink it by

shrinks mean multiplying by a value greater than -1 and less than 1
stetch means multiply by a value greater than 1 or less than -1

first one
horizontal shrink
muliply every x by a fraction
so that is A

2nd one
vertical strech
multiply whole function by a value greater than 1 or less than -1
D is the answer

3rd one
horizontal strech
multiply every x by a value greater than 1 or less than -1
C is the answer

4th one
vertical shrink
multiply whole function by a value greater than -1 and less than 1
B is the answer

Answer 2

Answer:

The answers are: A, D , C, B

Step-by-step explanation:

We have the function y = cosx and we need to check the changes of this function via various transformations.

1. Here, horizontal shrink is applied to y = cosx i.e. the value of 1/x has be to decreased or x>1. So, option C is correct.

2. Here, vertical stretch is applied i.e. overall value of function is increased. So, we can see that in option D, first vertical stretch is applied i.e. y = 5cosx and then reflection i.e. y = -5cosx.

3. Here, horizontal stretch is applied i.e. the value of 1/x has be to increased or 0<x<1. So, option D is correct.

4. Here, vertical shrink is applied i.e. the overall value of the function is decreased. So, option B is correct.