A = 2, which is a positive real number values, so this is a parabola parabola face up.H = 1, k = 3, so this is a low-point parabola maximum is at coordinates (1, 3), it is no less challenging facing the parabola the maximum points, the lowest point is specific to me.Because h = 1, so x = 1 is a linear axis of symmetry.
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