Question

Which sequence is modeled by the graph below?

Answer 1

Well if you want to do it easily just plug in the x values from the graph as your n value and choose the answer that gives you the right an or y value.

Answer 2

hmmm... ;/

Answer 3

i dont think im doing it correctly. can u help ?

Answer 4

e.g. Let's use (2, 0.6) and the first equation.
an = 6(-10)^n-1
0.6 = 6(-10)^2-1
0.6 = 6(-10)^1
0.6 = -0.6

This is false, so it must not be the first equation. Repeat with the others.