Question

The graph of f(x) = 2x + 4 shifts six units to the right when it is replaced with the graph of f(x) = 2x - k. What is the value of k?
2
4
6
10

Answer 1

first lets find where the graph f(x) = 2x + 4 cuts the x axis
2x + 4 = 0 where it cuts x-axis so
2x + 4 = 0
2x = -4
x = -2

Answer 2

I figured it out, thank you so much!

Answer 3

So the new line moves 6 to the right therefore it cuts the xx-axis at x = 4
so we have

0 = 2(4) - k

solve for k

Answer 4

ok but none of the choices are correct
k = 8

Answer 5

hmm I got 6 and it was correct. I guess theres a typo in the question. Thank you anyways

Answer 6

yes

Answer 7

if k = 6 then the lines moves 5 units to the right