PLEASE HELP ME Let f(x) = 9x – 18. What ordered pair in f corresponds to the equation f(x) = 9? Recall y = f(x). (x, y) =

I got (9,4) the first time and it said it was wrong

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.