Understanding quadratic functions

What is the axis of symmetry of

 $f\left(x\right)=4x^2-8x+9$  

• x=-8

• x=1

• x=-1

• x=2

What is the vertex of the quadratic graph?

• V: (4, −2)
• V: (−2, 4)
• V: (2, 4)
• V: (−2, −4)

What's the vertex of this parabola?

• (0, 3)

• (-1, 0)

• (3, 0)

• (1, 4)

What is the vertex in a quadratic equation?

• The line that divides the graph into two symmetrical parts

• All real numbers

• The highest or lowest point of the parabola

• y=mx+b

Convert to vertex form:

y = x² + 14x + 50

• y = (x + 7)² + 1

• y = (x - 7)² - 1

• y = (x + 7)² - 50

• y = (x + 7)² - 1

turning point - either minimum (lowest point) or maximum (highest point) on the parabola

• Vertex

• Minimum

• Maximum

• zeros

• (0, -3)

• (3, 6)

• (6, 3)

• (6, -3)

Which of the following equations is in vertex form?

• f(x) = x² + 6x - 2
• f(x) = (x - 1)² + 2

What is the vertex for the following equation?

y = 4x² - 8x + 9

• (4, -8)

• (0, 9)

• (-1, 21)

• (1, 5)