Answer:
.9
Step-by-step explanation:
 
        
                    
             
        
        
        
Using a calculator, the equation for the line of best fit where x represents the month and y represents the time is given by:
a. y = −1.74x + 46.6
<h3>How to find the equation of linear regression using a calculator?</h3>
To find the equation, we need to insert the points (x,y) in the calculator.
For this problem, the points (x,y) are given as follows, from the given table:
(1, 46), (2, 42), (3,40), (4, 41), (5, 38), (6,36).
Hence, inserting these points in the calculator, the equation for the line of best fit where x represents the month and y represents the time is given by:
a. y = −1.74x + 46.6
More can be learned about a line of best fit at brainly.com/question/22992800
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The coordinates of the point intersection of lines (-1, -1)
If you want solve:
y = -2x - 3, y = 3x + 2
-2x - 3 = 3x + 2     |+3
-2x = 3x + 5     |-3x
-5x = 5     |:(-5)
x = -1
Put the value of x to the first equation:
y = (-2)(-1) - 3 = 2 - 3 = -1
x = -1, y = -1
 
        
             
        
        
        
Answer:
Correct me if Im wrong but I think that it is 3 to the -5th power 
Step-by-step explanation:
 
        
                    
             
        
        
        
What? 
The slope can be found between two points by finding the change in values divided by the change in values.