Question

Which sequence is modeled by the graph below?

Answer 1

Why don't you try plugging in values?

Answer 2

how?

Answer 3

@johnweldon1993

Answer 4

The first way:

The \(x\)-coordinate on that graph is actually \(n\) and the \(y\)-coordinate is actually \(a_n\). Try plugging in the \(x\) and \(y\) coordinates to \(n\) and \(a_n\) respectively, and check if they satisfy the equation.

The second way:

If you notice, \(a_2, a_3, a_4, a_5 \) or \(1, 2, 4, 8\) are in a geometric sequence with common ratio \(2.\) and \(a_1 = 1/2\).

Answer 5

ahh, got it! Thank you

Answer 6

What did you get?

Answer 7

the first one

Answer 8

How?

Answer 9

By doing what you told me. It was right, I got it correct