Question

Please help. I don't know who to do this.

Answer 1

All you have to do is plug the x coordinate into the funtion.

If you plug in the first points then you will end up getting 128. So you know that point is not there.

Doing the for the rest:

2) 128 (0.5)^1 = 64

3) 128 (0.5)^3 = 16

4) 128 (0.5)^8 = 0.5