exam Maths Puzzle Numerical Ability

I dont understand how to answer this problem because:
1)i dont get how you find the domain
2)i dont understand how i graph the equation

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exam Other Question

Graph the inequality.
x > 1
HELP, please!

For the given function, find all asymptotes of the type indicated (if there are any).

f(x)= x-9/x^2-4, vertical

Thank You!