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What is the equation of the line represented by the table below?

\begin{tabular}{|c|c|}
\hline
[tex]$x$[/tex] & [tex]$y$[/tex] \\
\hline
-2 & 16 \\
\hline
-1 & 11 \\
\hline
0 & 6 \\
\hline
1 & 1 \\
\hline
2 & -4 \\
\hline
\end{tabular}

A. [tex]$y = -5x + 3$[/tex]
B. [tex]$y = -5x + 6$[/tex]
C. [tex]$y = -3x - 5$[/tex]
D. [tex]$y = -5x + 9$[/tex]

Sagot :

To determine which equation represents the line that fits the given data points, we need to find the slope (m) and the y-intercept (b) of the line. These values will allow us to compose the linear equation in the form [tex]\( y = mx + b \)[/tex].

Given data points:
[tex]\[ \begin{array}{|c|c|} \hline x & y \\ \hline -2 & 16 \\ \hline -1 & 11 \\ \hline 0 & 6 \\ \hline 1 & 1 \\ \hline 2 & -4 \\ \hline \end{array} \][/tex]

We can calculate the slope [tex]\( m \)[/tex] and intercept [tex]\( b \)[/tex], and then compare the resulting linear equation against the provided options:

1. Option A: [tex]\( y = -5x + 3 \)[/tex]
2. Option B: [tex]\( y = -5x + 6 \)[/tex]
3. Option C: [tex]\( y = -3x - 5 \)[/tex]
4. Option D: [tex]\( y = -5x + 9 \)[/tex]

Upon detailed calculation and comparison, we find that:
- The slope [tex]\( m \)[/tex] is [tex]\(-5\)[/tex]
- The intercept [tex]\( b \)[/tex] is [tex]\( 6 \)[/tex]

Hence, the equation that fits the data from the table is:

[tex]\[ \boxed{y = -5x + 6} \][/tex]

This aligns with Option B. Therefore, the correct option is B.