Unit 7 Quiz 2: Graphing Quadratic Equations (Vertex Form)

Standard form of a quadratic equation

• y=x²
• y=ax²+bx+c
• y=mx+b
• y=x

Which of the following equations matches vertex form of a quadratic?

• ax + by = c
• y = a(x - h)² + k
• y = ax² + bx + c
• y = mx + b

What is the vertex of this quadratic equation?

  $y=-x^2+10x-26$  

•  $\left(5,\ -1\right)$  

•  $\left(2,\ 4\right)$  

•  $\left(1,\ -3\right)$  

•  $\left(0,\ -4\right)$  

What is the vertex of this quadratic equation?

  $y=3x^2-6x$  

•  $\left(5,\ -1\right)$  

•  $\left(2,\ 4\right)$  

•  $\left(1,\ -3\right)$  

•  $\left(0,\ -4\right)$  

What is the vertex of this quadratic equation?

  $y=2x^2-4$  

•  $\left(5,\ -1\right)$  

•  $\left(2,\ 4\right)$  

•  $\left(1,\ -3\right)$  

•  $\left(0,\ -4\right)$  

Which graph matches this equation?  $y=x^2-4x-3$  

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Which graph matches this equation?  $y=-2x^2-8x-4$  

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Which graph matches this equation?  $y=-\left(x-1\right)^2$  

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Which graph matches this equation?  $y=\ \frac{1}{2}\left(x+4\right)^2-8$  

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Identify the vertex of y = -2(x+1)² + 3

• (h,k)

• (3, 1)

• (-1,-3)

• (-1,3)