exam Maths Puzzle Numerical Ability

Consider the points A(0,2), B(-6,4) and the line L1, with equation 3y-x-12=0.
(a) Find the equation of the circle C whose center is the point of intersection of the line L1, and

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exam Other Question

The shorter parallel side of a trapezoid is equal to its height and the longer side is 3/2 times as long. If the area is 80, find the lengh of the shorter side. Plot the graph of the equations and interpret the result.

1. 3x - 8y = 5
4x - 2y = 11

2. 4x - 6y = 2
2x - 3y = 1

3. 10x - 4y = 3
5x - 2y = 2