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

solve the following equations for x and y.

1.x+y=25
y=4x

2.x=y+8
2x+y=52

5. 3x+y=33
x=y-13

7.x-y=-10
3x=y+18
please help

-6x - 5y = 20
-y = 6x + 4