exam Maths Puzzle Numerical Ability

Solve the system by any method

{x=9/2+5
2x-9y=10

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exam Other Question

Use the intercept to graph the equation.
x + 2y = 4
How do I do this, I forgot already, I am so glad you are here for me. Thank you! please help me solve the equation 2x^-1/2 = 8