Question

Which graph best represents the function f(x) = 1(1.5)x?

Answer 1

i'll attach the image

Answer 2

Consider x=0

Answer 3

Hang on there's still more

Answer 4

@Fairy733189 also check whether the function is really 1(1.5)x

Answer 5

Sorry the x is an exponent

Answer 6

Great! So, \(f = 1*1.5^{x}\) ?

Answer 7

Yes!!!

Answer 8

Great! Okay so as Bobo-i-bo said, what will be value of f when x = 0 ?

Answer 9

Would it be 1 since 1.5 to the 0 power = 1 and 1 * 1 = 1

Answer 10

Perfect!

Answer 11

Now, see which of the option has y = 1 at x = 1

Answer 12

Sorry at x = 0

Answer 13

Let me check

Answer 14

Sure

Answer 15

Option 2

Answer 16

?

Answer 17

Perfect!!

Answer 18

Awesome. But am I always supposed to substitute x with 0 or can it be with any number?

Answer 19

It can be any number and you can find out the value of function at that x,... then your graph should have y = value of function you got and x = value you assumed for x...

Answer 20

Ok but I don't e=really understand it because I substituted 2 but it wasn't correct on the graph

Answer 21

Can you please explain it to me?

Answer 22

Yeah sure... we are talking of the same question? \(f = 1 * 1.5^x\)

Answer 23

yes!

Answer 24

Great! Now, when I put x = 2 => f = 1 * 1.5^2 = 1 * 2.25 = 2.25

Answer 25

Yes thats what I got but wouldn't it be like that on the graph. I just don't understand that part because when the y = 2 x would = 2.25 but the graph isn't like that

Answer 26

See at x = 2, the graph is just a bit above 2... that shows that graph is close enough.. is that actually 2.25 we can't say.. but then we are just looking for best alternative

Answer 27

Oh ok I see it now

Answer 28

Thank you so much!!!

Answer 29

I have another problem I need help with. I am going to close this one and open a new one. Can you help me with it too?

Answer 30

Yeah sure