exam Maths Puzzle Numerical Ability

solve each of the following systems by graphing...
2x -y = 4, 2x -y = 6

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exam Other Question

Is 15 a solution to the equation 8 - x = 7? Write a proportion that is equivalent to the statement: If 3 gallons of gasoline cost $5.37, then 8 gallons will cost $14.32.