Answer:
y= -4x
Step-by-step explanation:
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Answer:
The equation of the regression line is: 
Step-by-step explanation:
Linear regression is a linear approach to modelling the relationship between a dependent variable and one or more independent variables.
Let X be the independent variable and Y be the dependent variable. We will define a linear relationship between these two variables as follows:

We have the the following data:

To find the line of best fit for the points, follow these steps:
Step 1: Find
and
as it was done in the table.
Step 2: Find the sum of every column:

Step 3: Use the following equations to find intercept a and slope b:

Step 4: Assemble the equation of a line

The graph of the regression line is:
Answer:
n, vsfd
Step-by-step explanation:
tmb te amo krai
Answer:
Step-by-step explanation:
9
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Answer:
3952.8$
Step-by-step explanation:
61$ : 100 = x : 60% (since it is 40% off, the remaining is 60% of the price)
100x : 61 x 60
100x : 3360
3360 divided by 100
x = 36.6
36.6 : 100% = x 108%
100x : 36.6 x 108
x = 3952.8
3952.8 divided by 100
39.528