Question

Use technology to find the line of best fit for the following data. (−7,1), (2,9), (0,7), (−3,5), (−8,−2), (−1,2), (−6,−1), (−5,0), (0,5), (1,7), (−4,2), (3,7) When the equation of the line is in the form y=mx+b, what is the value of m?Enter your answer as a decimal rounded to the nearest tenths place, like this: 42.5Click on the following link to use the GeoGebra graphing calculator.

Answer 1

Given:

We have given so many values for line

Required:

To find the line for data

Explanation:

(-7,1) ,(2,9), (0,7), (-3,5) ,(-8,-2) , (-1,2)

(-6,-1), (-5,0), (0,5), (1,7), (-4,2), (3,7)

Using the online regression calculator:

slope

$\begin{gathered} slope\text{ =0.8700}\pm0.1382 \\ y\text{ intercept= 5.613}\pm0.5837 \\ x\text{ intercept =-6.452} \\ \frac{1}{slope}=1.149 \end{gathered}$

Y- is the predictor variable

X- is the independent variable

5.613 =slope of gradient

0.5837= intercept (b) where the line best fit cross the y-axis

Required answer:

Above calculation