Find two different ways to show how you know either 3/4 is greater than 2/3

You can change them into fractions with the same denominator: multiply 3/4 by 3 and 2/3 by 4

3/4 = 9/12
2/3 = 8/12

You could also convert them to decimals. 
3/4 = 0.75
2/3 = 0.667

3/4 is greater than 2/3

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.