Functions (quadratic)

Which of the following is the equation for the axis of symmetry?

• (3,8)
• (-3,-8)
• (-3,8)
• (3,-8)

Axis of Symmetry

• $x=-\frac{b}{2a}$

• $f\left(x\right)=ax^2+bx+c$

• $f\left(x\right)=x^2$

• $y=a\left(1+r\right)^t$

• zeros are (-2, 0) and (-8, 0)

• vertex is (-2, -8)

• y-intercept is (-8, 0)

• y-intercept is (0, -8)

Which equation has a vertex at (-4,-3) and a point at (-3,0)

• f(x) = 3(x+4)² - 3

• f(x) = -3(x+4)² - 3

• f(x) = -3(x-4)² + 3

• f(x) = 3(x-4)² - 3

What is the vertex for the following equation?

 $y=2x^2-12x+11$  

What is the vertex of the quadratic equation

 $f\left(x\right)=-\left(x+7\right)+3$  ?

•  $\left(7,\ 3\right)$  

•  $\left(-7,\ 3\right)$  

•  $\left(7,\ -3\right)$  

•  $\left(-7,\ -3\right)$  

What is the vertex (turning point) of this parabola?

• x = −6, x = 0

• (−6, 0)

• x = −3

• (−3, −9)

Given the table of a quadratic function, at what x-value would the axis of symmetry be? x = ?

Part 1:

What is the vertex of the graph of the function $f\left(x\right)=2\left(x-2\right)^2+3$ ? (Write as an ordered pair)