Computing Quadratic Equations

3x² - 4 is a quadratic

• true

• false

What are the green dots called?

• axis of symmetry

• vertex

• parabola

• roots or x-intercepts

What is the equation for axis of symmetry?

• y=3

• x=3

• x=5

• x=1

Does this parabola have a maximum or minimum?

• Maximum

• Minimum

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3

• a = 4, b = -8, c = 3

• a = 4, b =-8, c =-3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3

What are the x- intercepts?

• x= 0 and x= -4

• x= 0 and x= 4

• y= 0

• x= 2

What is the equation for this parabola in factored form?

• y=(x+2)(x-1)

• y=(x-2)(x+1)

• y=(x-2)(x-1)

• y=(x+2)(x+1)

The formula x = -b/2a is used to find

• the roots

• the x-value of the vertex

• the y-intercept

• the axis of symmetry

Does the equation open or or down? 
Y = -3x² +7x - 2

• up

• down

The formula
b² - 4ac
is called the

• quadratic formula

• factored form

• vertex formula

• the discriminant