Answer:
standard deviation- you can see how far each number varies, on average, from the average value of the list
median- calculates the average of the two numbers in the middle of a set of even count of numbers
mode- this function shows the most frequency occurring number in a set of numbers
rank- with this function you can determine the position of a number in an unarranged array or set
Step-by-step explanation:
i took the test
Answer:
x = - 11
Step-by-step explanation:
y = 15 is a horizontal line parallel to the x- axis
a perpendicular line must therefore be a vertical line parallel to the y- axis with equation
x = c
where c is the value of the x- coordinates the line passes through.
the line passes through (- 11, - 1 ) with x- coordinate of - 11 , then
x = - 11 ← equation of perpendicular line
The formula for slope is (y-y1)/(x-x1).
1 = x
-1 = y
-2 = x2
8 = y2
You would plug those into the formula: (-1-(-2))/(-1-8) and that would equal to: 1/(-9).