Aset of x and y scores has a regression equation with a slope of b = 4. if the mean for the x values is mx = 2 and the mean for the y values is my = 6, what is the y-intercept value for the regression equation?
-2
-22
4
-4

-2

Step-by-step explanation:

In a linear regression model we have the equation that relates and , where is the estimator of the slope and is the estimator of the Y-intercept. The coefficients and can be estimated with the equations:

. Thus,

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

24+x=y

step-by-step explanation: