VOCABULARY
This is the formula for the axis of symmetry when you have the equation in standard form.
What is x = -(b/2a) ?
The vertex of y= (x-5)2 + 2 is at this point.
What is (5, 2)?
The x-intercepts of f(x)= x2 - 4x - 21 are these numbers.
What are -3 and 7?
This is the axis of symmetry for the equation y = 2x2 + 8x – 5.
What is x = -2?
y = 4x2 + 7 has its vertex at this point
What is (0,7)?
These are the solutions to the equation x2 - 25 = 0.
What are -5 and 5?
How many x-intercepts does y = a(x − 2)2 + 5 have if a<0?
What is 2?
The lowest or highest point on a parabola.
What is the VERTEX?
This is the axis of symmetry for y=3x2 +6x - 2
What is x = -1?
The vertex of y = x2 is this ordered pair.
What is (0,0)?
Solve: x2 + 8x + 16 = 0.
What is -4?
This is y=(x-3)2 in standard form.
What is y=x2 - 6x + 9?
This is the standard form of a quadratic equation.
What is y = ax2 + bx + c ?
This is the axis of symmetry for a parabola with x-intercepts at -5 and 2
What is x= -1.5?
This point is the vertex of y = -3x2 + 18x - 13.
What is (3,14)?
The x-intercepts of 2x2 + 4x - 6 = 0 are these.
What are 1 and -3?
This is the equation of the parabola on the graph (cue graph).
What is y=5x2-30x+45 or y=5(x-3)2 ?
This is the vertex form of the quadratic equation.
What is y = a(x-h)2+k?
The vertex of y = -4x2 + 3 is this.
What is (0,3)?
Solve: x2 + 4x = 0
What are -4 and 0?
A parabola has a vertex at (3, -1) and x-intercepts at (2, 0) and (4, 0). Write its equation.
What is y=(x-2)(x-4) or y=(x-3)2-1 or y=x2-6x+8?