Using the equation y=ax^2+bx+c to represent a parabola on a graph, which statement is true?
1) If b is negative, the parabola opens downward
2) If a is negative, the parabola opens upward
3) If a is positive, the parabola open upward
4) If c is negative, the parabola opens downward
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Home » Mathematics » Using the equation y=ax^2+bx+c to represent a parabola on a graph, which statement is true? 1) If b is negative, the parabola opens downward 2) If a is negative, the parabola opens upward 3) If a is positive, the parabola open upward 4) If c is