Answer:
The Regression line is that line , which passes through all the points , through a single point , or none of the points.
Here, the table is about ,weight of a dog in pounds at various ages in months.
The ratio of Weight at different stages,of months should be proportional.
So, if you look at option (1) , the ratio of x to y in three cases are same that is

It means Regression line is Passing through three points, means Dog's weight at three different stages of month are same.and in other tables the ratio are not equivalent.
So, Table 1, that is option 1
is true.
x: 3, 4, 6, 8, 9, 12
y: 2, 5, 7, 10, 11, 15
Recall that the median of a set of numbers is the number in the middle of the set, after the numbers have been rearranged from lowest to highest.
From the plot, we get that the number, arranged from lowest to highest are:

The number in the middle of the above set is:

Therefore the median of the given numbers is:

Answer: 42.
The 4th equation is the answer
Answer:
1133.3 liters of water after leakage.
Step-by-step explanation:
x*.30=340
x=340/.30
x=1133.33