Question

Find a possible exponential function in y = a · bx (y=a(b)^x) form that represents the situation described below.

Passes through the points (0, 4) and (2, 1).

Answer 1

Answer:

y = 4 · ½ˣ

Step-by-step explanation:

It passes through the point (0, 4), so:

4 = a · b⁰

a = 4

It passes through the point (2, 1), so:

1 = 4 · b²

1/4 = b²

b = ½

y = 4 · ½ˣ