exam Maths Puzzle Numerical Ability

I am having problems with solving and graphing the following problem. Can you Help?

1. Plot the graph of the equation 2x+4y=10 and 3x+6y=12 and interperet the result.

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exam Other Question

Add. 19 + (-20) + 2 + (-19) gym is 21 years newer than the auditorium. the gym is also one fourth as old as the auditorium. how old is each building? choices for auditorium age: 26, 27, 28

write and equation to