Given:
The graph of data points.
To find:
The equation of the best fit line by using the graphing calculator.
Solution:
The general form of a best fit line is:
[tex]y=mx+b[/tex] ...(i)
Where, m is the slope and b is the y-intercept.
Using the graphing calculator, we get
[tex]m\approx 1.423[/tex]
[tex]b\approx 11.698[/tex]
Substituting [tex]m\approx 1.423, b\approx 11.698[/tex] in (i), we get
[tex]y=1.423x+11.698[/tex]
Therefore, the equation of the best fit line is [tex]y=1.423x+11.698[/tex] and its graph is shown below.
