exam Maths Puzzle Numerical Ability

Solve each of the following systems by graphing

3x - 6y = 9 and x - 2y = 3

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exam Other Question

Determine which two equations represent perpendicular lines.

A y= 4/7x-3 B y= 3x-4/7 C y=-1/3x+4/7 D y= 1/3x-4/7

Please instruct me on how to do this An employee who produces x units per hour earns an hourly wage of y = 0.85x + 12 (in dollars). Find the hourly wage for an employee who produces 14 units per hour.