## iiamentertainment Can Someone explain this y = 2(4.5)^x Graph one year ago one year ago

1. eyust707

Just plug in a few x's..

2. slaaibak

|dw:1357253305765:dw|

3. iiamentertainment

@slaaibak what about y = 4(1/5)^x

4. slaaibak

When x = 0, y = 2 you can see this by plugging in zero: y = 2 * 4.5^0 = 2 * 1 = 2 Rest follows from the shape of an exponential function.

5. slaaibak

rewrite as: $y = 4 \times 5^{-x}$ now it's pretty easy to draw.

6. iiamentertainment

|dw:1357253564128:dw| @slaaibak is this what it would look like ?

7. slaaibak

nope. |dw:1357254130231:dw|

8. iiamentertainment

@slaaibak thats not one of my choices

9. slaaibak

then your choices are wrong. note it should be more concave |dw:1357254665976:dw|

10. iiamentertainment

@slaaibak what about y = 3(2)^(x + 1) – 4

11. iiamentertainment

@slaaibak