Can someone help me on this?

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.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?