Translate the parabola y = ax (a ≠ 0) upward by three units, so that the length of its segment on the x-axis is 4, and find the value of A

Translate the parabola y = ax (a ≠ 0) upward by three units, so that the length of its segment on the x-axis is 4, and find the value of A

When y = 0, x = ± 2. So: 4A + 3 = 0, a = - 3 / 4