AA End of Unit 2 Practice

What is the standard form of a quadratic function?

• ax^2 + bx + c

• ax^2 + bx + d

• ax^2 + bx

• ax^2 + c

What is the vertex form of a quadratic function?

• y = a(x-h)^2 - k

• y = a(x-h)^2 + k

• y = a(x+h)^2 + k

• y = a(x+h)^2 - k

Tags

CCSS.HSA.SSE.A.2

Which of these is a formula you could use to find the axis of symmetry of a quadratic function when you have standard form?

• x = a / (2b)

• x = -b / (2a)

• x = b / (2a)

• x = -a / (2b)

How do you determine if a quadratic function opens upward or downward?

• Look at the sign of the constant term (c)

• Look at the sign of the coefficient of the linear term (b)

• Guess.

• Look at the sign of the coefficient of the quadratic term (a)

Tags

CCSS.HSF-IF.C.7A

What is the maximum or minimum value of a quadratic function?

• The maximum or minimum value of a quadratic function is the y-intercept.

• The maximum or minimum value of a quadratic function is the x-intercept.

• The maximum or minimum value of a quadratic function is the axis of symmetry.

• The maximum or minimum value of a quadratic function is the y-coordinate of the vertex.

Tags

CCSS.HSA.SSE.A.2

How do you find the x-intercepts of a quadratic function ... or ANY function?

• Set the function equal to zero and solve for x.

• Find the y-intercepts of the function.

• Take the derivative of the function.

• Set the function equal to one and solve for x.

Tags

CCSS.HSF-IF.C.7C

What is the relationship between the x-coordinate of the vertex and the equation of the axis of symmetry of a quadratic function?

• They do not intersect.

• They use the same number.

• They are opposites.

• They are parallel lines.

What is the y-intercept of the equation
y = 2x²+8x+3

• (0,3)
• (3,0)
• (0,2)
• y=8

Tags

CCSS.HSF-IF.C.7A

Is this point a max or min?

• max
• min

Tags

CCSS.HSA.REI.B.4

Find the vertex of the quadratic:
y = -2x² + 4x + 3

• (0, 3)
• (-1, 5)
• (1, 5)
• (1, -5)

Tags

CCSS.HSA.REI.B.4