8.3 w/ Foiling

The standard form of a quadratic function is...

• ax² + bx + c
• a(x - h)² + k
• y - y₁ = m(x - x₁)
• Ax + By = C

Find the axis of symmetry for
f(x) = x²- 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4

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

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

Does the following quadratic equation have a maximum or minimum value? How can you tell?

y = x² + 2x - 3

• Minimum value, because the "a" value is positive

• Maximum value, because the "b" value is positive

• Maximum value, because the "a" value is positive

• Minimum value, because the "c" value is negative

What is the equation for axis of symmetry?

• y=3
• x=3
• x=5
• x= -3

Tags

CCSS.HSF-IF.C.7A

What is the domain of the function?

• D:{ x > 3}
• D:{x < 3}
• D:{all real numbers}
• D:{ -1 < x < 5}

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What is the range of this function?

• -4 ≤ y ≤ 5
• -1 ≤ x ≤ 3
• All Real Numbers
• y ≥ -4

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

• (-2, 0)

• (0, -2)

• (0, -1)

• (-5, 0)

• (0, -5)

Tags

CCSS.HSF-IF.C.7A

• not enough info

• (-9, 4)

• (-4, -9)

• (4, 9)

Find the vertex of the following quadratic equation:

y = 3x²

• (0, 3)

• (-3, 0)

• (o, -3)

• (0, 0)