Question

I'm about to cry, could someone please help me?

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?

A.) -5
B.) -1
C.) 1
D.) 5

Answer 1

@PixieDust1 could you please help me?

Answer 2

I'd love to help you, friend, but I don't think I can on this one. I'm not certain on the answer, and like to be certain before I help out. Sorry friend. :(

Answer 3

ok

Answer 4

@RadEn @ranga @dumbcow @whpalmer4 @wolfe8

Answer 5

Here I got someone who could help you @Loser66

Answer 6

thank you

Answer 7

Are you sure about the question?

If you move the line 5 steps to the right (see file)
the equation is y= 2x - 6
and 6 is not one of your choices.

Answer 8

I'm absolutely positive about the question. I don't understand it either. :/

Answer 9

moving the line to the right 5 steps makes sense, right?

if you have a point on the (for example (0,4) is on the line), that point will be 5 steps to the right on the new line... at (5,4) ... you add 5 to the x value)

the new line has the same slope, so you can think of it as point-slope problem

slope is 2, point is (5,4)

y-4 = 2(x - 5)
in slope-intercept form you get
y - 4 = 2x - 10
y = 2x - 6

Answer 10

So, after looking at this problem, I can safely say that the answer is D., which is 5.

Answer 11

the answer is 6
I would talk to your teacher about this one.

Answer 12

Do you have time to help me w/ another algebra question?

Answer 13

6?

Answer 14

Question: let say f(x1) = 2x+4
f(x2) = 2x-k
which one is replaced one? which one is original graph?

Answer 15

This happened to me once on a quiz. I gave my entire explanation of why none of the options work and what the answer should of been, and guess what? It was a trick question! I got bonus points :D

Answer 16

The original one is f(x1) = 2x + 4. Probably wrong.

Answer 17

I just need a walkthrough of the question. :-) I guess the answer, if it's wrong, tell me, if it's right just put a smiley face.

Answer 18

Probably wrong though. :(

Answer 19

yea, me too. think of this, f(x) = 2x -1 then move it to the right 5 units, we get f(x) =2x+4

Answer 20

cross the fingers, hehehe

Answer 21

I think, it's b

Answer 22

oh, sorry, I think it's C , k = 1
because if k =1, f(x) = 2x -1
move to the right 5 units, f(x) = 2x -1 +5 = 2x +4

Answer 23

So, I can safely say, the answer is C., which is 1.