exam Maths Puzzle Numerical Ability

-8<_8+y

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exam Other Question

Can someone help me graph the following problem? I am lost.

Solve the system by graphing:

3x + y = 6
3x - y = 0

Thank you,
Ashley
The ratio of the length to width of a photograph is 1.5 to 1. If the photograph is enlarged, the length will measure 21 centimeters.

What will the width measure?