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प्रश्न
Find the slope of a line passing through the points (x, 9) and (12, 6) is `(-1)/3 = ("y"_2 - "y"_1)/("x"_2 - "x"_1)`
उत्तर
Slope of line AB
⇒ `(-1)/3 = (6 - 9)/(12 -"x")`
⇒ x - 12 = -9
⇒ x = 3
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