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 Form 2 Mathematics Mixed Revision Questions With Answers Set 1

A straight line #l_1# has a gradient #-1/2# and passes through the point P (-1, -3). Another straight line #l_2# passes through the points Q(1, -3) and R(4, 5). Find:
(a) the equation of #l_1#.
(b) the gradient of #l_2#.
(c) the equation of #l_2#.
(d) the co-ordinates of the point of intersection of #l_1# and #l_2#.
(e) the equation of a line through R parallel to #l_1#.
(f) The equation of a line passing through a point S (0, 5) and perpendicular to #l_2#.

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