Formulas
x= -b/ 2a
Axis of symmetry
What are the x intercepts of
y = -(x+1)(x-4)
(-1,0) (4,0)
Does the graph of this equation open up or down?
y = (x+2)(x-1)
Opens Up
Write the following quadratic function in standard form.
y = (x-2)² + 6
x² - 4x + 10
What are the zeros of the function?
y = (x-3)(x+4)
3 and -4
x= +-b √( b² - 4ac) /2a
Quadratic formula
What are the x-intercepts of
y = -2(x-4)(x+6)
(4,0)
(-6,0)
Does the graph of this equation open up or down?
y = -4(x-2)² + 2
Open Down
Write the following quadratic function in standard form. y = 3(x-3)² - 12
3x² - 18x + 15
What are the zeros of the function?
y = 4x(x+3)
0 and -3
y= ax² + bx + c
Standard form of a quadratic equation
What is the vertex of
y = (x+5)² - 1
(-5,-1)
Does the graph of this equation open up or down?
y = 2(x-1)² - 6
Open Up
Write the following quadratic function in standard form. y = 4(x+1)(x+2)
4x² + 12x + 8
What is the Axis of Symmetry of the function?
y = x² + 2x - 24
x = -1
y= a(x - h)² + k
Vertex Form of a quadratic equation
What is the vertex of
y = (x-7)(x-1)
(4,-9)
Does the graph of this equation open up or down?
y = 5(x+5)(x-2)
Open Up
What are the zeros of the function?
y = x² + 2x - 24
4 and -6
y= a(x - p)(x - q)
What is factored form.
What is the vertex of
y = -4(x-3)²
(3,0)
Does the graph of this equation open up or down?
y = -3(x+4)² - 2
Open down
What is the Axis of Symmetry of the function?
y = x² + 21x + 98
x = -10.5