Please answer this question fast

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.

How to solve a simultaneous equation involved with fractions?

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2