Question

@jim_thompson5910

Answer 1

b?

Answer 2

periodic means that it repeats after a set interval

Answer 3

here's an example

http://teamapproach.ca/math/images/periodic.jpg

Answer 4

I would graph each using desmos

https://www.desmos.com/calculator

Answer 5

and they would go up or down continuosly?

Answer 6

@jim_thompson5910 is it 2x+5 then?

Answer 7

the 2x+5 graph is a straight line (blue line)
the green curve is the one that repeats over and over. It goes up and down in a predictable pattern

so the cosine graph is the periodic graph

Answer 8

so this is c?

Answer 9

scractch that next question lol

Answer 10

when I mean "repeat" I mean the y values repeat themselves

eg: when x = 0, y = cos(x) = 1. Then when x = 2pi, y = cos(x) = 1. The y value repeats itself every 2pi units