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Question
A line passes through (x1, y1) and (h, k). If slope of the line is m, show that k – y1 = m (h – x1).
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Solution
The slope of the line passing through (x, y) and (h, k) is `(k - y_1)/(h - x_1)`
It is given that the slope of the line is m.
`("k" - "y"_1)/("h" - "x"_1) = "m"`
= k – y1 = m(h – x1)
Hence, k – y1 = m(h – x1)
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(ii) `(- 1/3, 11/3), (4/3, 7/3)` |
| (c) The coordinates of the point on the line joining A (–2, 5) and B (3, 1) such that AP = PQ = QB are |
(iii) `(1, 12/5), (-3, 16/5)` |
