exam Maths Puzzle Numerical Ability

solve the system by addition or subtitution.
3x-4y=8
6x-2y=10

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exam Other Question

suppose that 2 poles are 96 feet apart. One pole is 12 feet high, the second one is 52 feet high. There is a wire from the top of each pole to the base on the other pole. How high above the ground do the wires cross? Which of the ordered pairs is a solution for the equation 2x - 3y = 6?
A) (0, 2)
B) (-3, 0)
C) (-3, -2)
D) (0, -2)