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.
Quadratic graph lines are U- or Õˆ-shaped, which is called a parabola ... On the \(x\)-axis, locate the given amount. Draw a vertical line, using a ruler, from the given amount to the curve.