Math question: Graph the quadratic function y = 2x^2 + 3x - 1 on the coordinate plane. Determine the vertex coordinates and whether the parabola opens upward or downward.
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Math question: Find the slope-intercept equation of a line that passes through (2, -3) and (4, 5).
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Find the median of the data set: 4, 8, 10, 15, 18, 20, 23