Get the best answers to your questions with the help of IDNLearn.com's experts. Ask your questions and get detailed, reliable answers from our community of knowledgeable experts.

The table shown represents a linear relationship.

\begin{tabular}{|c|c|c|c|c|}
\hline
[tex]$x$[/tex] & 0 & 1 & 2 & 3 \\
\hline
[tex]$y$[/tex] & -6 & -3 & 0 & 3 \\
\hline
\end{tabular}

Based on the table, what is the equation of the linear relationship in slope-intercept form?

A. [tex]$y = -3x + 2$[/tex]
B. [tex]$y = -3x - 2$[/tex]
C. [tex]$y = 3x + 6$[/tex]
D. [tex]$y = 3x - 6$[/tex]


Sagot :

To find the equation of the linear relationship represented by the table, we need to determine two key components: the slope (m) and the y-intercept (b). The slope-intercept form of a linear equation is given by [tex]\( y = mx + b \)[/tex].

1. Identify the points from the table:

[tex]\[ \begin{aligned} (x_1, y_1) &= (0, -6) \\ (x_2, y_2) &= (1, -3) \\ (x_3, y_3) &= (2, 0) \\ (x_4, y_4) &= (3, 3) \\ \end{aligned} \][/tex]

2. Calculate the slope (m):

The slope [tex]\( m \)[/tex] can be calculated using any two points, but typically we use the formula:
[tex]\[ m = \frac{\Delta y}{\Delta x} = \frac{y_2 - y_1}{x_2 - x_1} \][/tex]
Plugging in the values from the first two points:
[tex]\[ \Delta y = -3 - (-6) = 3 \][/tex]
[tex]\[ \Delta x = 1 - 0 = 1 \][/tex]
Therefore,
[tex]\[ m = \frac{3}{1} = 3 \][/tex]

3. Find the y-intercept (b):

Using the slope-intercept form [tex]\( y = mx + b \)[/tex], we can plug in the coordinates of any point to solve for [tex]\( b \)[/tex]. Using the point [tex]\( (0, -6) \)[/tex]:
[tex]\[ -6 = 3(0) + b \][/tex]
Therefore,
[tex]\[ b = -6 \][/tex]

4. Write the equation:

With [tex]\( m = 3 \)[/tex] and [tex]\( b = -6 \)[/tex], the equation of the linear relationship is:
[tex]\[ y = 3x - 6 \][/tex]

Thus, the correct equation of the linear relationship based on the table is:
[tex]\[ y = 3x - 6 \][/tex]

The correct choice is:
[tex]\( \boxed{y = 3x - 6} \)[/tex]