Help! Medal :)
The graph of f(x) = 2x + 4 shifts five units to the right when it is replaced with the graph of f(x) = 2x - k. What is the value of k?

-5
-1
1
5

Question

Help! Medal :)
The graph of f(x) = 2x + 4 shifts five units to the right when it is replaced with the graph of f(x) = 2x - k. What is the value of k?

 -5
 -1
 1
 5

anonymous · Answer

@iGreen

anonymous · Answer

@eric_d

igreen · Answer

You want to shift it 5 units to the left..so what number do we use?

anonymous · Answer

I don't Understand this question move 5 from what? @iGreen

igreen · Answer

It wants you to move f(x) = 2x + 4 five places to the right.

igreen · Answer

So what's our answer going to be?

anonymous · Answer

f(x) = 2x + 4 is -2 in my graph @iGreen

igreen · Answer

No.. we will subtract 9 to 4..

What's 4 - 9?

anonymous · Answer

-5

igreen · Answer

Yes..so what's your answer going to be?

anonymous · Answer

A

anonymous · Answer

or do I have to move it 5 spaces

igreen · Answer

No..

We already have:

f(x) = 2x - k

The negative is already there..

igreen · Answer

So what's our answer going to be?

anonymous · Answer

you mean I need to get ride of the negative so D

igreen · Answer

Yep, you got it.