Intro to Quadratics

• y = 9x² - 15x + 21

• y = -3x² - 75x - 4

• y = 9x² + 90x + 221

• y = -3x² - 30x - 79

• y = -5x² - 20x - 30

• y = -5x² - 4x - 10

• y = 25x² + 100x + 90

• y = 25x² - 10x - 30

What is the vertex?

• (2, 4)
• (3, -1)
• (0, 8)
• (4, 2)

Find the vertex of the quadratic function: y = 4x² + 24x + 5

• (−3, −31)

• (3, 113)

• (−3, −76)

• (3, 5)

Find the Vertex:
f(x) = x² + 10x + 21

• (-5,-4)
• (1,10)
• (10,21)
• No Real Solution

Find the Vertex:
y = x² + 6x + 2

• (-3,-7)
• (1,6)
• (6,2)
• No Real Solution

What is the vertex of x²+18x+80?

• (9,1)
• (10,8)
• (-9,-1)
• (-10,8)

What is the vertex of this parabola?

• (0, 5)

• (2, 1)

• (-1, 2)

• (-2, 1)