What is the approximate rate of change of this function on the interval [-2,2]

State whether weight is a function of height for the six students and explain. a. yes, height is a function of weight because two students weigh 165 pounds but have different heights. b. no, height is not a function of weight because two students weigh 165 pounds but have different heights. c. yes, weight is a function of height because for each value of height there is one corresponding value of weight. d. no, weight is not a function of height because there is not enough data to determine a function.

Can any one me with the answers to these questions asap?

What is the solution to the equation below? 3/x-2+6=square root x-2 +8