exam Maths Puzzle Numerical Ability

Graph using the slope and the y intercept x+3y=12

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exam Other Question

solve the homogeneous system: {x^2-144y^2=144
x^2+y^2=144 Rectangular stage. One side of a rectangular stage is 2 meters longer than the other. If the diagonal is 10 meters, than what are the lengths of the sides?