Which of the following is the reciprocal parent function?
O A. F(x) = x²
O B. F(X) = |x|
O C. F(X) = - x
O D. F(x) = - 1/x

Ill mark the brainliest if you me with the these three questions 7,8,9

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

Will give brainliest for correct answer 8. use the distance time graph to answer these questions: a. what does the graph tell us about the velocity of the car? b. what is the average velocity of the car? (show work) c. is the velocity reflected in the graph positive or negative?d. is there any point on the graph where the car is not moving? how do we know?