exam Maths Puzzle Numerical Ability

Given a set of points, the least squares line formed be letting x be the independent variable will not necessarily be the same at the least squares line formed by letting y be the

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Find the foci of a hyperbola with the equation 9y2 - 72y - 16x2 - 64x - 64 = 0 Tutor,

I have a question. I have to match graphs with these equations. I think I have them correct but I am not sure what kind of work I would show for these problems. Could