What is the vertex form of the parabola function with a vertex at (2, -3), which opens upward?
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Question: What is the limit of the function f(x) = (x^2 - 3x + 2)/(x - 2) as x approaches 2?
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Question: Consider a circle function with the equation x^2 + y^2 = r^2. Find the value of y when x = 3, given that r = 5 and x and y are both positive integers.