Vocabulary
Every quadratic equation has a U-shaped graph called this.
What is parabola?
y = x2 - 3x + 1
What is standard form?
Name the vertex
y= (x-3)2 +4
What is (3,4)?
Graph the equation. Must include vertex, and at least one point on each side.
y=(x-5)(x-1)
What is graph on board?
Name the x-intercepts Y=3x(x-2)
What is (0,0) and (2,0)?
Name the vertex.
y= -3(x+1)2 - 8
What is (-1, -8)?
Graph the equation. Must include vertex, and at least one point on each side.
y = -3(x+2)(x-2)
What is graph on board?
When a quadratic equation is written in this form y = ax2 +bx + c
What is the standard form?
y = 5x2 + x - 1
What is standard form?
Name the y-intercept. y=x2-3x+4
What is (0,4)?
Name the vertex
y=(x+4)(x-4)
What is (0,-16)?
Graph the equation. Must include vertex, and at least one point on each side.
y=(x+1)2 - 2
What is graph on board
This is the number before the x2 that determines whether a parabola opens up or down.
What is the leading coefficient ("a" value)?
Name the y-intercept.
y=(x+2)(x-1)
What is (0,-2)?
Name the vertex
y = x2 - 4x - 5
What is (2,-9)?
Graph the equation. Must include vertex, and at least one point on each side. y=-2(x-4)2 + 3
What is graph on board.
The line that runs through the vertex and divides the parabola in half.
What is axis of symmetry?
y = - 1/2 (x + 7)2 - 4
What is vertex form?
Name the y-intercept.
y= 3(x-1)2 + 1
What is (0,4)?
Name the vertex
y = 2x2 + 4x - 6
What is (-1,-8)?
Graph the equation. Must include vertex, and at least one point on each side.
y= -x2 -6x + 1
What is graph on board