book Maths Puzzle Numerical Ability

Identify the shape of the graph, transform it into standard form, and sketch the graph.
x^2 - 4y^2 + 4x -24y - 36 = 0

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book Other Question
The question is: Use Elimination to solve:
7x-4y=29
3x+5y=-1 i forgot what the algebraic method was...here is my equation to solve...

x-y=3
-2x+2y=-6

thank you....