In an orthonormal system x'Ox, y'Oy, given the points: R(1;9/2), S(2, 2), T(-4;-3)
U(-5;-1/2), and the straight line (D) of equation y = 3/2x +3.
1) Verify, by calculation, that R and T are two points of the straight line (D).
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Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

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