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Question
Find the slope of the line passing through the points:
$$\mathrm{A}(2, 5)$$ and $$\mathrm{B}(-4, -4)$$
Sum
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Solution
The slope of a line passing through points $$(x_1, y_1)$$ and $$(x_2, y_2)$$ is given by: $$m = \frac{y_2 - y_1}{x_2 - x_1}$$
For $$\mathrm{A}(2, 5)$$ and $$\mathrm{B}(-4, -4)$$:
$$m = \frac{-4 - 5}{-4 - 2}$$
$$= \frac{-9}{-6}$$
$$= \frac{3}{2}$$
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Chapter 14: Equation of a Straight Line - EXERCISE 14A [Page 222]
