Question

Help!!! The functions f(x) and g(x) are described below.

f(x) = 2x + 9
g(x) = 2x - 15

The graph of g(x) is obtained by shifting down the graph of f(x) by _____ units.

Answer 1

@nikato @bibby

Answer 2

Is it 4?

Answer 3

I mean 6?

Answer 4

@mathmale

Answer 5

@ganeshie8

Answer 6

Subtract f(x) from g(x) and see the difference....

Answer 7

Get x alone ?

Answer 8

@sourwing

Answer 9

nope the enitre expression for f and g...

Answer 10

-6

Answer 11

?

Answer 12

@superdavesuper

Answer 13

Is it -6?

Answer 14

hmmm nope, it is not 6....try the subtraction again please?

Answer 15

Michelle, you start with f(x) = 2x + 9. If you shift that downward by 9 units, you end up with k(x) = 2x + 0, or k(x) = 2x. Now, if you shift your graph of k(x) downward another 15 units, you end up at g(x) = 2X - 15.

How many units is it necessary to shift f(x) downward to obtain g(x) = 2x - 15?

Answer 16

24? @mathmale

Answer 17

that's right! Shift the graph of f(x) down 24 units. Nice work!

Answer 18

:) yes

Answer 19

Thank you! Can you help me another?

Answer 20

Thanks for the medal, michelle! actually i think mathmale explains it better to u :)