PLEASE HELP!! what is true about the graph of the line y= -3x + 4?

a) the line has a slope of 4

b) the line has a slope of -4

c) the line crosses the y-axis below the origin

d) the line crosses the y-axis above the origin

Solve |2x - 5| = 4 if anyone could , that would be great

What is the square root of 45? (step by step working plz)

Me max 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.