WILL MARK BRAINLIST thank you

f(x) =

Step-by-step explanation:

This doesn't really look like a linear model, so it might be exponential.

Let's write the equation: y = a. Plug in a few values for y and x to find a and b:

9 = a  ⇒  a = 9/b²

27 = a  ⇒  a = 27/b³

Set these equal:

9/b² = 27/b³

9b = 27

b = 3

Plug this in to find a:

a = 9/b² = 9/9 = 1

The equation is:

f(x) =

Y = 3^X

Step-by-step explanation:

this is an exponential function

Y = a(b^X)

9 = ab²

27 = ab³

b = 3

9 = a(3)²

a = 1

if x decreases by 4 then y increases by 10

step-by-step explanation: