A1: Unit 8 Section 1 Classwork

What is the y-intercept?
f(x) = -2x² + 4x - 6

• (0, 6)
• (0, -6)
• (6, 0)
• (-6, 0)

What is the axis of symmetry?
f(x) = x² - 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4

What is the vertex?
f(x) = -x² - 4x + 12.

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

.How many zeros does this parabola have? 

• 3
• 2
• 0
• 1

If a is negative in the function, which way does the parabola

• up

• down

• left

• right

Does this parabola have a maximum or minimum?

• Maximum
• Minimum

Graph the quadratic.

• A
• B
• C
• D

Graph the quadratic.

• A
• B
• C
• D

The parabola y = x² - 4x + 5 will have a vertex, write as a coordinate (x, y)

Answer explanation

What are the coordinates of the vertex? Is it a maximum or a minimum?

• (2, 3); minimum

• (2, 5); maximum

• (2, 3); maximum

• (2, -3); minimum

• (2, -3); maximum

Answer explanation