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Solve these equations simultaneously, y= 5x - 9and, x=2y

X=2Y=1

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Solve these simultaneous equations 5x + y = 21, x- 3y = 9

y is inversely proportional to d^2. When d = 10, y = 4. d is directly proportional to x^2. When x = 2, d = 24. Find a formula for y in terms of x. Give your answer in its simplest form.

Draw the graph y = x2 + 3x + 2

Solve: 4x + 5 = 6x - 13

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