FF 2-26-19

Find the vertex.  y = x²+ 16x + 71

• V(-8, 7)
• V(-8, 3)
• V(8, 10)
• V(16, -2)

Tags

CCSS.HSA.REI.B.4

CCSS.HSF.IF.B.4

An imaginary line through the vertex, which results in the two halves being mirror images of each other. It is written as x=4, for example, which would mean that the x value of the vertex would also be 4.

• Axis of Symmetry

• Vertex

• x-intercept

• Foci

What is the green dashed line called?

• roots or x-intercepts
• parabola
• axis of symmetry
• line of dashes

Tags

CCSS.HSF-IF.C.7A

Standard form of a quadratic equation

• y=x²
• y=ax²+bx+c
• y=mx+b
• y=x

Tags

CCSS.HSA.SSE.A.2

What is the formula for finding the x-coordinate of the vertex for a parabola?

• x = 2b / a

• x = -b / 2a

• x = c

• set x = 0, then solve

What determines which way a parabola "opens"?

• The "a" value

• The "b" value

• The "c" value

• The sign of the vertex

Tags

CCSS.HSF-IF.C.7A

How can you quickly find the y-intercept of a quadratic?

• The "a" value

• The "b" value

• The "c" value

• The sign of the vertex

Tags

CCSS.HSF-IF.C.7A

What is the x-coordinate of the vertex of a parabola with the equation: y = 2x² - 6x + 4

• 6

• 3/2

• -3/2

• -2/3

Does this parabola have a maximum or minimum?

• Maximum
• Minimum

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

Tags

CCSS.HSA.REI.B.4