Question

if two regression lines are y = a+bx and x=c+dy, then the correlation coefficient between x and y is ?​

Answer 1

Answer:

give figure pleas I have no idea sorry

Answer 2

Answer:

The answer to this question is.

$\frac{x}{y} =\frac{1-bd+ad+bcd}{a+bc}$

Step-by-step explanation:

Solving Linear Equations

Solving linear equations means finding the value of the variable(s) given in the linear equations. A linear equation is a combination of an algebraic expression and an equal to (=) symbol. It has a degree of 1 or it can be called a first-degree equation. For example, x + y = 4 is a linear equation. Sometimes, we may have to find the values of variables involved in a linear equation. When we are given two or more such linear equations, we can find the values of each variable by solving linear equations. There are a few methods to solve linear equations. Let us discuss each of these methods in detail.

Solving Linear Equations in One Variable

A linear equation in one variable is an equation of degree one and has only one variable term. It is of the form 'ax+b = 0', where 'a' is a nonzero number and 'x' is a variable. By solving linear equations in one variable, we get only one solution for the given variable. An example of this is 3x - 6 = 0. The variable 'x' has only one solution, which is calculated as

3x - 6 = 0

3x = 6

x = 6/3

x = 2

For solving linear equations with one variable, simplify the equation such that all the variable terms are brought to one side and the constant value is brought to the other side. If there are any fractional terms then find the LCM (Least Common Multiple) and simplify them such that the variable terms are on one side and the constant terms are on the other side. Let us work out a small example to understand this.

4x + 8 = 8x - 10. To find the value of 'x', let us simplify and bring the 'x' terms to one side and the constant terms to another side.

4x - 8x = -10 - 8

-4x = -18

4x = 18

x = 18/4

On simplifying, we get x = 9/2.

Solving Linear Equations by Substitution Method

The substitution method is one of the methods of solving linear equations. In the substitution method, we rearrange the equation such that one of the values is substituted in the second equation. Now that we are left with an equation that has only one variable, we can solve it and find the value of that variable. In the two given equations, any equation can be taken and the value of a variable can be found and substituted in another equation. For solving linear equations using the substitution method, follow the steps mentioned below. Let us understand this with an example of solving the following system of linear equations.

$y=a+bx\\x=\frac{y-a}{b} \\x=c+dy\\\frac{y-a}{b}=c+dy\\y-a=bc+bdy\\y(1-bd)=bc+a\\y=\frac{a+bc}{1-bd} \\x = c+d(y)\\x=c+d*\frac{a+bc}{1-bd}\\x=\frac{1-bd+ad+bcd}{1-bd} \\\frac{x}{y} =\frac{1-bd+ad+bcd}{a+bc}$

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