Graphing quadratics in standard form

How do you find the axis of symmetry?

• x = b/(2a)

• x = (2a)/b

• x = -b/(2a)

• x = -b/2

What is the axis of symmetry?
f(x) = x² - 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4

The equation for the axis of symmetry line is 

 $x=\frac{-b}{2a}$  

• true

• false

The axis of symmetry line passes through which point?

• y-intercept
• any random point
• vertex
• none of these

What is the axis of symmetry?

• the slope of the graph

• the x-axis

• the dividing line for a parabola

• a way to spin my pencil

What is the axis of symmetry of y=3x²-6x+8?

• x=-1
• x=1
• x=-2
• x=2

What is the equation for the axis of symmetry?

• y=3
• x=3
• x=5
• x=1

Tags

CCSS.HSF-IF.C.7A

What is the general form of the quadratic equation discussed in the video?

• y = ax + bx + c

• y = ax^2 + bx + c

• y = ax^3 + bx^2 + c

• y = a + bx + cx^2

How do you find the axis of symmetry in a quadratic equation?

• x = a/(2b)

• x = b/(2a)

• x = -b/(2a)

• x = -a/(2b)