book Maths Puzzle Numerical Ability

how do I find the vertix and focus of this equation y2-2y+12x-35=0

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book Other Question

if (x) = -2/5x+7
a. evaluate and simplify f(-2)

b. solve f (x() = -3 A right triangle has side lengths that are consecutive even integers. Use the pythagorean theorem to find the lengths of those sides. Please help!