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Volgvan
3 years ago
11

A scatter plot was constructed and a line of best fit was drawn, 25x 80. What is the equation of this best line of fit?

Mathematics
1 answer:
Tcecarenko [31]3 years ago
7 0

Answer:

y = 5x + 25

Explaination:

To get the equation of a line, first get the slope of the line.


Slope = (change in y)/(change in x)


          = (60-30)/(7-1)


          = 30/6


            = 5


Now use one point in the line (4,45) and a general point (x,y).


Slope = (change in y)/(change in x)


    5 = (y - 45)/(x - 4)


    5(x - 4) = (y - 45)


  5x - 20 = y - 45


y = 5x -20 + 45





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