VOCABULARY
AXIS OF SYMMETRY
VERTEX
SOLVE QUADRATICS BY FACTORING
GRAPHS
100
The u-shaped graph shown by a quadratic.
What is a PARABOLA?
100
This is the formula for the axis of symmetry.
What is x = -b/2a ?
100
The vertex of y = 2x^2 + 16x - 1 is this ordered pair.
What is (-4,-33)?
100
The roots of f(x)= x^2 - 4x - 21 are these numbers.
What are -3 and 7?
100
A parabola will look like this if a is negative.
What is open downwards with the vertex as a maximum?
200
The line that passes through the vertex and divides a parabola into two symmetric parts.
What is the AXIS OF SYMMETRY?
200
This is the axis of symmetry for the equation y = 2x^2 + 8x – 5.
What is x = -2?
200
y = 4x^2 + 7 has its vertex at this point
What is (0,7)?
200
These are the solutions to the equation x^2 - 25 = 0.
What are -5 and 5?
200

 This is the place where the graph crosses the vertical axis

What is the y- intercept?

300
The lowest or highest point on a parabola.
What is the VERTEX?
300
This is the axis of symmetry for y=3x^2+6x-2
What is x = -1?
300
The vertex of y = x^2 is this ordered pair.
What is (0,0)?
300
Solve: x^2 + 8x + 16 = 0.
What is -4?
300

What is the direction of opening for a graph with a negative a value?

What is downwards?

400
These are three names for the place or places a parabola crosses the x-axis.
What are x-intercepts, roots and zeros?
400
This is the axis of symmetry for y = -4x^2 + 3.
What is 0?
400
This point is the vertex of y = -3x^2 + 18x - 13.
What is (3,14)?
400
The zeros of 2x^2 + 4x - 6 = 0 are these.
What are 1 and -3?
400

The vertex of a graph is a minimum if the a value is this

What is positive?

500
This is the standard form of a quadratic equation.
What is ax^2 + bx + c = 0 ?
500
This is the axis of symmetry for y = -2x^2 + 8x + 12.
What is x = 2?
500
The vertex of y = -4x^2 + 3 is this.
What is (0,3)?
500
Solve: x^2 + 4x = 0
What are -4 and 0?
500

Easily read from an equation in factored form.

What are the x intercepts?

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