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What is the slope of a trend line that passes through the points \((1, 3)\) and \((10, 25)\)?

A. \(-\frac{15}{2}\)
B. \(-\frac{1}{2}\)
C. \(\frac{2 \rho}{9}\)
D. [tex]\(\frac{24}{7}\)[/tex]


Sagot :

To determine the slope of a trend line that passes through the points \((1,3)\) and \((10,25)\), we can use the slope formula. The slope \(m\) between two points \((x_1, y_1)\) and \((x_2, y_2)\) is given by:

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

Here are the steps to find the slope:

1. Identify the coordinates of the two points: \((x_1, y_1) = (1, 3)\) and \((x_2, y_2) = (10, 25)\).

2. Substitute these coordinates into the slope formula:

[tex]\[ m = \frac{25 - 3}{10 - 1} \][/tex]

3. Simplify the expression:

[tex]\[ m = \frac{22}{9} \][/tex]

Therefore, the slope of the trend line that passes through the points \((1, 3)\) and \((10, 25)\) is \(\frac{22}{9}\).

Comparing this result with the given options:
- \( -\frac{15}{2} \)
- \( -\frac{1}{2} \)
- \( \frac{2 \rho}{9} \)
- \( \frac{24}{7} \)

None of these match with [tex]\(\frac{22}{9}\)[/tex]. This suggests that there is no correct option provided among the given choices.