exam Maths Puzzle Numerical Ability

Please help me solve this poblem. This is from a homework sheet.

Find the foci and asympototes of the hyperbola.

y2-x2=1
81 144

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exam Other Question

I had a question on a test which was the absolute value (using l in lieu of the absolute value sign) of l3-5xl=-7. The answer is 0. Is this because x cannot be negative? please help me identify the following conic. That is, is it a circle, parabola, hyperbola or ellipse? show why please!!! x^2 - 4y^2 - 4x - 24y = 48