HELP ASAP! I need help with 2 questions- will mark brainleist.

Question number 1: Does a proportional relationship exist in the graph? If so, find the constant of proportionality.

Picture shown below of the graph.

Question number 2: explain how to find the constant of proportionality from the equation.

Y = 3.5x

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

Needmax recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

(x-5)1/2+5=2 what is possible solution of this equation