For a simultaneous equation in x and y if Dr=-25, Dy=50 and D=5. What is the value of x ?
a) -5
b) 1/5
c) 10
15
31​

X is -5
And y is 10

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.