Quadratic Equations

Solve the equation by factorizing:

x² - 11x +19 = -5

• x = {3,8}

• x = {-3,8}

• x = {3,-8}

• x = {-3,-8}

Tags

CCSS.HSA-REI.B.4B

What number added would make a perfect square trinomial?

x² - 8x + ______

• - 4

• - 64

• 12

• 16

Tags

CCSS.HSA-REI.B.4B

What should you do first in solving this equation?

x² + 6x - 13 = 3

• Write down: a=1, b=6, c=-13

• Get factored form

• Make it equal 0 by subtracting 3 on each side

• Type it all in a calculator

Tags

CCSS.HSA-REI.B.4B

Complete the Square

x² + 6x + 20

• (x + 3x)² + 11

• (x + 3)² + 11

• (x + 6)² + 11

• (x + 3)² + 29

Tags

CCSS.HSA-REI.B.4B

What is the green dashed line called?

• roots or x-intercepts

• parabola

• axis of symmetry

• y intercept

Tags

CCSS.HSF-IF.C.7A

What is the axis of symmetry for this graph?

• y = 2

• x = 0

• x = 2

• y = 0

Tags

CCSS.HSF-IF.C.7A

A parabola is upside-down when a is:

• negative

• positive

• 0

• infinite

Tags

CCSS.HSF-IF.C.7A

What is the significance of the ordered pair (0, -2) to the graph?

• It is the vertex

• It is an x-intercept

• It is the y-intercept

• It is the axis of symmetry

Tags

CCSS.HSF-IF.C.7A

A parabola has a vertex at (-3,2).

What is the axis of symmetry?

• y = -2

• x = 3

• x = -3

• y = 2

What is the equation for standard form?

• y = x² + bx + c

• y = ax² + bx + c

• y = mx + b

• Ax + By = C