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प्रश्न
Find the slope of the line passing through the following point: (–1, 3), (3, –1)
उत्तर
Let E =(–1, 3) = (x1, y1) and F = (3, –1) = (x2, y2) say.
Slope of line EF = `(y_2 - y_1)/(x_2 - x_1)`
= `(- 1 - 3)/(3 - (-1))`
= `(-4)/4`
= –1.
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