The weights of boxes of candies produced in a factory are normally distributed with a mean weight of 16 oz and a standard deviation of 1 oz. what is the weight of a box of candies with a z-score of 2?
(y - yo) = m.(x - xo)
where (x, y) and (xo, yo) are points of a line and m his slope
if both lines have m equal they are parallels, if they are the opposite inverse they are perpendicular
so, let's see.
line which pass by (-52, -18) and (-29, 53)
(53 - (-18)) = - (-52))
53 + 18 = + 52)
71 = m.(23)
m = 71/23
line which pass by (90, 33) and (19, 56)
(56 - 33) = m.(19 - 90)
23 = )
m = -23/71
as we see, 71/23 and -23/71 are opposite inverses of one another, so they are perpendicular lines.
a transversal is a line that intersects two or more lines in different points.