Now, h = -b/2a. Plug in the values into the formula, and you get: The parabola's axis of symmetry (x = h) is a vertical line passing through the vertex, so as demonstrated above, this is x = 1.

y = x² + 6 - moves the parabola 6 places up the y axis y = x² – 7 - moves the parabola 7 places down the y axis In the video, the 2D curve of the Lovell Telescope dish is a parabola.