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anonymous one year ago PLEASE HELP!!! Given the function f(x) = x^2 and k = 2, which of the following represents a horizontal shift? A. f(x) + k B. kf(x) C. f(x + k) D. f(kx)

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1. anonymous

@mathmate

2. Nnesha

quadratic equation in vertex form $y=a(x-h)^2+k$ where k = horizontal shift h=vertical shift (hint: inside the parentheses )

3. anonymous

so it would be c?

4. Nnesha

$\huge\rm y=a(x-\color{reD}{h})^2+\color{blue}{k}$ h is inside the parentheses not k

5. Loser66

yup

6. anonymous

oh, so it would be a?

7. Loser66

c

8. anonymous

what?

9. Loser66

(x+h) , this h is adding to x, right? hence the graph moves along x-axis, that is it moves to the right/ left

10. Loser66

if f(x) + k, that is the whole graph + k. It means the whole graph (y) moves along y axis. Got what I meant?

11. Loser66

|dw:1439820520241:dw|

12. anonymous

yes

13. anonymous

I got what you mean

14. Loser66

|dw:1439820544584:dw|

15. Loser66

no confuse anymore, right? hehehe...

16. anonymous

no I'm not confused anymore :) thank you so much :)

17. mathmate

$$\huge\rm y=a(x-\color{reD}{h})^2+\color{blue}{k}$$ $$h\ne 0$$ means horizontal shift, $$k\ne 0$$ means vertical shift, example: |dw:1439822841978:dw|

18. mathmate

* graph should be (x-5)^2+1

19. mathmate

|dw:1439823426628:dw|

20. Nnesha

.,-, ahh i messed up sorry i didn't pay attention thanks for catching mathmate!

21. mathmate

No problem! We all do at different times! lol

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