In quadratic function, if two parabolas have the same shape, is a the same, or is the absolute value of a the same? In other words, the same shape, the same opening direction?

In quadratic function, if two parabolas have the same shape, is a the same, or is the absolute value of a the same? In other words, the same shape, the same opening direction?

Answer: in quadratic function, two parabolas have the same shape, which usually means that the absolute value of a is the same
Here the same, only refers to the shape of the parabola, excluding the opening direction
For example, the shape of y = 2x & # 178; is the same as that of y = - 2x & # 178