quadratics vocabulary

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