What is the value of f(x) when f(x) = c, given that c is a constant value?
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What is the area of a triangle with base 7 units and height 12 units?
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Find the equation of a hyperbola with the center at (2, -3), vertices at (2, -5) and (2, -1), and foci at (2, -6) and (2, 0). How would it look like on a graph?