exam Maths Puzzle Numerical Ability

Solve the system of equation by graphing.
1.)
-7x + y = -8
-3x + y = -12

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exam Other Question

Solve the system. Enter the solution coordinates.
x+y=4
-x+y=2 a developer purchased 70 acres of land for 900000 dollars. if part costs 20000 dollars per acre and the remainder cost 10000 per acre how many acres did the developer buy at each price.