4-7-2021 Algebra 1: Quiz (8.2)

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

If given the equation y = 3(x + 5)² - 4, what is the vertex of the parabola?

• (5, -4)
• (-5, -4)
• (-15, -4)
• (15, -4)

What is the axis of symmetry for the following quadratic function: f(x) =1/2 (x-4)² + 3

• x=4

• x=-4

• x=1/2

• x=3

What is the vertex of the parabola: y=2(x-3)²+4

• (3,4)
• (-3,4)
• (3, -4)
• (-3,-4)

Which of the following is the correct equation for the given graph?

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

Tags

CCSS.HSF-IF.C.7A

Which equation is graphed above?

• $y=-\left(x-1\right)^2+4$

• $y=\left(x-1\right)^2+4$

• $y=-\left(x-4\right)^2+1$

• $y=\left(x-4\right)^2+1$

Tags

CCSS.HSF-IF.C.7A

What is the vertex of the graph?

• $\left(0.13\right)$

• $\left(3,4\right)$

 $f\left(x\right)=-\left(x-4\right)^2+1$  

Choose the correct graph of the equation.

• 
• 
• 
• 

Tags

CCSS.HSA.CED.A.2

Which equation matches the graph above?

• $r\left(x\right)=-\left(x+4\right)^2-1$

• $r\left(x\right)=\left(x+4\right)^2-1$

• $r\left(x\right)=-\left(x-4\right)^2+1$

• $r\left(x\right)=\left(x-4\right)^2+1$

Tags

CCSS.HSF-IF.C.7A

Which way does the following equation open? $f\left(x\right)=-\frac{1}{2}\left(x-5\right)^2+6$  

• upward

• downward

Tags

CCSS.HSF-IF.C.7A