Write a possible exponential function in y=ab^x form for the graph described below.

-> Passes through the points (0,2) and (3,0.25).

Respuesta :

Answer:

see explanation

Step-by-step explanation:

Substitute the given points into the equation and solve for a and b

Using (0, 2 ), then

2 = a. [tex]b^{0}[/tex] → [tex]b^{0}[/tex] = 1, thus

a = 2

The equation is

y = 2 [tex]b^{x}[/tex]

Using (3, 0.25 ), then

0.25 = 2. b³ ( divide both sides by 2)

b³ = 0.125 ( take the cube root of both sides )

b = 0.5

Hence a possible exponential function is

y = 2[tex](0.5)^{x}[/tex]