Sec. 8.3 (Standard Form of a Quadratic Functions) - Alg 1

Sec. 8.3 (Standard Form of a Quadratic Functions) - Alg 1

To complete this lesson, you will need...

• Your Chapter 8 Note Packet

• Pencil

• Calculator

Sec. 8.3 (Day 1)

• If you were absent last Thursday, please watch the Day 1 Video on the next slide before moving to Day 2 material.

• If you need a review of last Thursday's lesson, please watch at least one or two examples on the Day 1 Video. The move to Slide 5.

• If you are good to go with finding the y-intercept and vertex of a quadratic in Standard Form, go to Slide 5.

Multiple Choice

What is c in the following equation?

y=ax²+bx+c

• Zeroes

• Axis of Symmetry

• Direction

• y-intercept

Multiple Choice

What is the y-intercept of this parabola?

• (−1, 3)

• (−3, 11)

• (−2, 5)

• (0, 5)

Multiple Choice

Find the y-intercept of f(x) = 2x²-2x + 1

• 2

• -2

• 1

• -1

Multiple Choice

What is the y intercept for the equation:

y = -8x² + 3x - 7

• (0, -8)

• (0, 3)

• (-8, -7)

• (0, -7)

Multiple Select

What is the formula above primarily used for? Choose all that apply.

• Finding the axis of symmetry from standard form

• Finding the vertex from standard form

• Finding the x of the vertex from standard form

• Finding the y of the vertex from standard form

Multiple Choice

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

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

Multiple Choice

Find the vertex of   $y=-2x^2-16x+3$  

• (4, -93)

• (-4, 35)

• (-4,99)

• (8,3)

Sec. 8.3 (Day 2)

Standard Form of a Quadratic Function

Multiple Choice

What is the axis of symmetry?

f(x) = x² - 8x + 15.

• x = -4

• x = 4

• y = 4

• y = -4

Multiple Choice

What is the y-intercept?

f(x) = -2x² + 4x - 6

• (0, 6)

• (0, -6)

• (6, 0)

• (-6, 0)

Multiple Choice

Graph the quadratic.

• A

• B

• C

• D

Multiple Choice

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

• up

• down

• left

• right

Multiple Choice

Determine if the function graphed has a maximum or a minimum value and identify that value.

• maximum at -1

• minimum at -1

• maximum at 4

• minimum at 4

Multiple Choice

Does the equation have a max or min?

y = 2x² + 7x + 5

• max

• min

Multiple Choice

Determine the maximum or minimum value of the function.

f(x) = -x² - 4x + 12.

• 16

• 2

• -2

• -16

Multiple Choice

Determine the maximum or minimum value of the function.

y = x² - 6x + 11?

• 2

• -2

• 3

• -3

THE END