Question

if x and y are related as 4x+3y+11=0 and mean deviation of x is 2.70.what is mean deviation of y?​

Answer 1

Answer:

ans = 3.6

Step-by-step explanation:

4x+3y+11=0

y=(4/3)x

y=4/3 *2.70. (putting the value of x)

y=3.60

Answer 2

Concept:

For an equation y = a+ bx

Mean deviation of y is

MD(y) = |b|* MD(x)

Given:

4x+3y+11=0

MD(x)= 2.70

Find:

MD(y)

Solution:

$4x+3y+11=0\\\\3y= -11 - 4x\\\\y= (-11/3)+ (-4/3)x$

Now this equation is in the form $y= a+bx$

Hence,

$MD(y)= |b|*MD(x)\\\\MD(y)=|-4/3|*2.70\\\\MD(y)=(4/3)*2.7\\\\MD(y)= 3.60$

Mean deviation of y is 3.60.

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