4.1 - Key Features of Quadratics

Which function has a smaller y-intercept?

• $y=\left(x+1\right)\left(x+2\right)$

• $y=3\left(x+1\right)^2+7$

Tags

CCSS.HSF-IF.C.7A

Identify the y-intercept

• (0, -3)

• (0, 1)

• (0, 3)

• (2, 1)

Tags

CCSS.HSF-IF.C.7A

What are the coordinates of the vertex, and is it a maximum or minimum?

• (-1, 4); Maximum

• (-1, 4); Minimum

• (4, -1); Maximum

• (4, -1); Minimum

Tags

CCSS.HSF-IF.C.7A

What is the axis of symmetry of y=2x²-4x+9?

• x = 1
• x = -1
• x = -2
• x = 4

Tags

CCSS.HSA.REI.B.4

Which of the following equations has a graph that opens down?

• f(x) = x²-5x-3
• f(x) = -2x²+6x+9
• f(x) = 4x²
• f(x) = (x-1)²+2

Tags

CCSS.HSF-IF.C.7A

Identify the y-intercept of the quadratic:

 $f\left(x\right)=\left(x+9\right)\left(x+11\right)$  

• (0,99)

• (0,-9)

• (0,-11)

• (0,76)

Tags

CCSS.HSF-IF.C.7A

Identify the y-intercept of the quadratic:

 $f\left(x\right)=\left(x+3\right)^2+8$  

• (0,8)

• (3,0)

• (0,17)

• (0,-12)

Tags

CCSS.HSF-IF.C.7A

Identify the axis of symmetry:

 $f\left(x\right)=\left(x+2\right)^2-6$  

•  $x=2$  

•  $x=-2$  

•  $y=-2$  

•  $y=-6$  

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

Identify the axis of symmetry:

 $f\left(x\right)=x^2-10x+27$  

•  $x=3$  

•  $y=7$  

•  $x=5$  

•  $x=-3$  

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

CCSS.HSA.REI.B.4

Identify the vertex of the quadratic:

 $f\left(x\right)=-x^2+4x-3$  

•  $\left(3,0\right)$  

•  $\left(2,1\right)$  

•  $\left(-2,-7\right)$  

•  $\left(-1,6\right)$  

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7