Westonci.ca offers fast, accurate answers to your questions. Join our community and get the insights you need now. Join our platform to connect with experts ready to provide precise answers to your questions in different areas. Discover detailed answers to your questions from a wide network of experts on our comprehensive Q&A platform.

A calculator was used to perform a linear regression on the values in the table. The results are shown to the right of the table.

\begin{tabular}{|c|c|}
\hline
[tex]$x$[/tex] & [tex]$y$[/tex] \\
\hline
1 & 11 \\
\hline
2 & 8 \\
\hline
3 & 4 \\
\hline
4 & 1 \\
\hline
5 & 0 \\
\hline
\end{tabular}

\begin{array}{l}
\text{LinReg} \\
y = a x + b \\
a = -2.9 \\
b = 13.5 \\
r^2 = .9688940092 \\
r = -.9843241383
\end{array}

What is the line of best fit?

A. [tex]$y = 13.5 x - 2.9$[/tex]

B. [tex]$y = -2.9 x + 13.5$[/tex]

C. [tex]$y = -0.984 x + 13.5$[/tex]

D. [tex]$-0.984 = -2.9 x + 13.5$[/tex]


Sagot :

To determine the correct line of best fit from the given options, let's use the provided values of [tex]\(a\)[/tex] and [tex]\(b\)[/tex].

The equation of the line of best fit is usually expressed as:
[tex]\[ y = ax + b \][/tex]

Here, the values provided are:
[tex]\[ a = -2.9 \][/tex]
[tex]\[ b = 13.5 \][/tex]

Plugging these values into the standard linear equation form [tex]\( y = ax + b \)[/tex], we get:
[tex]\[ y = -2.9x + 13.5 \][/tex]

Now, let's compare this derived equation with the given options:

A. [tex]\( y = 13.5x - 2.9 \)[/tex]

B. [tex]\( y = -2.9x + 13.5 \)[/tex]

C. [tex]\( y = -0.984x + 13.5 \)[/tex]

D. [tex]\( -0.984 = -2.9x + 13.5 \)[/tex]

Clearly, the correct equation matches option B:

[tex]\[ y = -2.9x + 13.5 \][/tex]

Thus, the line of best fit is:

B. [tex]\( y = -2.9x + 13.5 \)[/tex]
We hope our answers were helpful. Return anytime for more information and answers to any other questions you may have. We appreciate your time. Please come back anytime for the latest information and answers to your questions. Your questions are important to us at Westonci.ca. Visit again for expert answers and reliable information.