Intro to Quadratics

Which of the following is the vertex of the graph?

• (0, 3)

• (3, -6)

• (1, 10)

• (4, -5)

Find the vertex of
y = x² + 4x + 1
Use the equation in the picture!

• (0, 0)

• (-2, 13)

• (2, 13)

• (0.375, 6.0625)

Find the vertex of
y = 4x² + 4x + 4
Use the equation in the picture!

• (0, 0)

• (-0.5, 7)

• (0.5, 4)

• (0.375, 6.0625)

James jumped off a cliff into the ocean while on vacation.  The function h = -16t² + 240 gives James' height above the water after t seconds.  How many seconds did it take him to get to the surface of the water?  

• 15 seconds

• 4 seconds

• 3.87 seconds

• 15.49 seconds

What would the equation
y = x² - 6
do to the graph?

• move left 6

• move up 6

• move down 6

• move right 6

What would the equation 
y = x² + 15 
do to the graph?

• move down 15

• move up 15

• move left 15

• move right 15

What is the green dot on the parabola called?

• vertex

• x- intercepts

• axis of symmetry

• parabola

Tags

CCSS.HSF-IF.C.7A

What are the green dots called?

• axis of symmetry

• vertex

• parabola

• roots or x-intercepts

Tags

CCSS.HSF-IF.C.7A

Which of the following represents the vertex form of the quadratic function?

• y = a(x-p)(x-q)

• y = a(x - h)²

• y = ax² + bx + c

• y = a(x - h)² + k

What is the vertex of the quadratic function:
y = x² - 6x + 11?

Write your answer as a point (x,y)

(a)