exam Maths Puzzle Numerical Ability

Solve the system of equations by graphing. Then classify the system as consistent or inconsistent; and the equations as dependent or independent.

3x-y=23
3x+4y=13

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exam Other Question
negative six s is greater or equal to negative seventy-eight solve the equation 4^2x+1=2^3x+6

this is what I did.


(2^2)^2x+1=2^3x+6
2^4x+1=2^3x+6
4x+1=3x+6
x=5

IS this correct?