Question

Given the line of regression Y on X as 3X + 4y -20 = 0 estimate the value of Y when X =
10.​

Answer 1

Answer:

3X+4y-20=0

30+4y-20=0

4y+10=0

4y=-10

y=-10/4

Step-by-step explanation:

Answer 2

Answer:

Required value of x is (-2.5).

Step-by-step explanation:

Given line is $3x + 4y - 20 = 0$

This is linear equation because highest power of variable is one. Here x and y are variables part and 20 is constant part.Coefficient of x is 3 and coefficient of y is 4.

Now given x= 10.

Here want to find value of y.

We are numbering the given equation,

$3x + 4y - 20 = 0......(1)$

We are putting x=10 in equation (1) and get,

$3 \times 10 + 4y - 20 = 0$

We are multiplying 3 and 10,

$30 + 4y - 20 = 0$

We are separating variable and constant part,

$4y = 20 - 30$

We are subtracting 30 from 20,

$4y = - 10$

$y = - \frac{10}{4} = - \frac{5}{2} = - 2.5$

Required value of y is (-2.5).