The regression equation of Y on X is given by the following formula:

Where byx is given by the formula:

Where N is the number of values (N=8). We need to find the sum of X values, the sum of Y values, the average of X, the average of Y, the sum of X*Y and the sum of X^2.
The table of values is:
The values we need to know are on the following table:
By replacing the known values in the formula we obtain:

Now, the average of X and Y is the sum divided by N, then:

Replace these values in the formula and find the regression equation as follows:

The answer is a) y=4.6x+28.26

The solution of the system of equation is the coordinates of the common point on both lines !
that is ~
Therefore the Correct choice is C
Answer:
To get the area of a parallelogram
Step-by-step explanation:
A=bh is the formula for an area so option D is definitely wrong.
The formula for the area of a triangle is
.
The formula for the area of a circle is πr²
The formula for the area of a parallelogram is A=bh
A=bh is the formula for the area of a parallelogram.