Question

Which graph models the function f(x) = −2(3)x?

Answer 1

let's see... It's an exponential function. And it's negative, so which way is it pointing? Up or down?

Answer 2

down

Answer 3

is it the first one? @alias

Answer 4

yup

Answer 5

ty:)

Answer 6

yw :)

Answer 7

can you help me with one more?

Answer 8

@alias

Answer 9

you can tell what the y-intercept is right? From that you can eliminate two answers already

Answer 10

yeaah

Answer 11

true the y intercept is 2?

Answer 12

yea, to fin y-int, just evaluate function at x=0

Answer 13

how?

Answer 14

no..., when you substitute 0, you get -3(1/3) - 2, so it's -3

Answer 15

remember, you're not dealing with straight lines, but rather exponential functions, hey work kinda differently...

Answer 16

okay, so it's the first one?

Answer 17

since it's negative?

Answer 18

since it's negative, f(x) should be the largest when x is negative

Answer 19

that means that it starts up...