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(a) Find the length between the two points A (2, 3) and B (1, 5). |
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(b) Find the gradient of the line passing through the two points P (-1, -2) and Q (2, 4). |
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Hence, find the equation of line PQ. |
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| 2. | A straight line passes through three points
A(1, 3), B(4, 1) and C(3, h) as shown |
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in the diagram below. |
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 |
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Find |
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(a) the equation of line AB, |
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(b) the value of h. |
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