PARABOLAS
How to find their equation:
(Quadratic Formula)
Written in y = ax² + bx + c
Vertex: intersects the axis of symmetry, point where line starts increasing or decreasing
Axis of Symmetry: x = ?, crosses the vertex, same on both sides
WHEN a > 0
● Parabola opens upwards
● Vertex is minimum point
● Range: (-∞, ∞)
● Domain: [min x-value, ∞)
WHEN a < 0
● Parabola opens downwards
● Vertex is maximum point
● Range: (-∞, ∞)
● Domain: (-∞, max y-value]
How to find their equation:
(Quadratic Formula)
Written in y = ax² + bx + c
Vertex: intersects the axis of symmetry, point where line starts increasing or decreasing
Axis of Symmetry: x = ?, crosses the vertex, same on both sides
WHEN a > 0
● Parabola opens upwards
● Vertex is minimum point
● Range: (-∞, ∞)
● Domain: [min x-value, ∞)
WHEN a < 0
● Parabola opens downwards
● Vertex is maximum point
● Range: (-∞, ∞)
● Domain: (-∞, max y-value]
