Quadratics Vocabulary

• Vertex
  • The vertex is the highest or lowest point on the graph.curve.
  • PlatoThe vertex is the point (x, y) where x = -(b/2a).
    
• Naru calls it the apexapex.

We then use this x-value in the equation to find the y-value of the vertex.

Vertex Formula:

• The graph of y = ax^2 + bx + c has the line x = -(b/2a) as its axis of symmetry.
• The x-coordinate of the vertex is x = -(b/2a)
• You can find the y by plugging the x-cordonate into your equation.
  

axis of symmetry

•  the vertical line that splits the parabola down the middle.
  
•  The axis of symetry uses the same formula as the vertex formula to find the x-cordonate: x = -(b/2a)

Up/ Down Test