exam Maths Puzzle Numerical Ability

Solve the system by graphing, addition and substitution methods
3x - y = 1
3x - y = 2

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exam Other Question

Solve the following system of equations using the graphing method. Besure to state the solution to the system.
x-y=-5
2x-6y=-18
1) a rectangular prism is 9in. long 15in wide and 21in high and the length is doubled what happens to the volume

2) a rectangular prism is 8cm long 24cm wide and 43 cm high if