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What is the slope of the line that contains the points \((-2,7)\) and \((2,3)\)?

A. -1
B. 1
C. -4
D. 4


Sagot :

To find the slope of the line that contains the points \((-2, 7)\) and \((2, 3)\), 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, the coordinates given are:
[tex]\[ (x_1, y_1) = (-2, 7) \][/tex]
[tex]\[ (x_2, y_2) = (2, 3) \][/tex]

Substitute these values into the slope formula:

[tex]\[ m = \frac{3 - 7}{2 - (-2)} \][/tex]

Simplify the numerator and the denominator:

[tex]\[ m = \frac{3 - 7}{2 + 2} \][/tex]
[tex]\[ m = \frac{-4}{4} \][/tex]
[tex]\[ m = -1 \][/tex]

Therefore, the slope of the line that passes through the points \((-2, 7)\) and \((2, 3)\) is:

[tex]\[ \boxed{-1} \][/tex]

So, the correct answer is:
A. -1