Calculate the Vertex

Find the vertex of 
f(x) = -x² - 4x + 12.

• (-2, 16)
• (2, 0)
• (2, 4)
• (-2, 4)

Find the vertex of

y = 5x² - 20x + 13

• (5, -7)

• (-2, -7)

• (2, -7)

• (-7, -2)

Using the Axis of Symmetry formula, find the coordinates of the vertex.

y = -x² + 4x - 6

• (2, -2)
• (-2, 2)
• (0, 2)
• (0, -2)

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

• (3,2)
• (-3,-2)
• (-3,2)
• (3,-2)