Quadratics Vocabulary

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

  • 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