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The table represents a linear function.

\begin{tabular}{|c|c|}
\hline [tex]$x$[/tex] & [tex]$y$[/tex] \\
\hline -2 & 8 \\
\hline -1 & 2 \\
\hline 0 & -4 \\
\hline 1 & -10 \\
\hline 2 & -16 \\
\hline
\end{tabular}

What is the slope of the function?

A. [tex]$-6$[/tex]
B. [tex]$-4$[/tex]
C. [tex]$4$[/tex]
D. [tex]$6$[/tex]


Sagot :

To determine the slope of a linear function given a table of [tex]\(x\)[/tex] and [tex]\(y\)[/tex] values, we can use the formula for the slope (m) between two points, [tex]\((x_1, y_1)\)[/tex] and [tex]\((x_2, y_2)\)[/tex], which is:

[tex]\[ m = \frac{y_2 - y_1}{x_2 - x_1} \][/tex]

Let’s choose the first two points from the provided table to calculate the slope:
- When [tex]\(x = -2\)[/tex], [tex]\(y = 8\)[/tex].
- When [tex]\(x = -1\)[/tex], [tex]\(y = 2\)[/tex].

Using these points:
- [tex]\((x_1, y_1) = (-2, 8)\)[/tex]
- [tex]\((x_2, y_2) = (-1, 2)\)[/tex]

Now, apply the slope formula:

[tex]\[ m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{2 - 8}{-1 - (-2)} = \frac{2 - 8}{-1 + 2} = \frac{-6}{1} = -6 \][/tex]

Thus, the slope of the function is [tex]\(-6\)[/tex].

The correct choice from the given options is [tex]\(-6\)[/tex].