exam Maths Puzzle Numerical Ability

How would I solve the following system of by graphing, and what would the coordinates be?
3x + y = 6
3x - y = 0

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exam Other Question

The area of a parallelogram is 24.96 cm squared. The base is 6.4 cm. If the measures of the base and height are each doubles, find the area of the resulting parallelogram. The sum of three consecutive even numbers is 150. Find the numbers.

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