Graphing Quadratic Functions

The graph of a quadratic function is called

• a line

• a hyperbola

• a parabola

• a cubic

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CCSS.HSF-IF.C.7A

The standard form of a quadratic equation is

• y=x²

• y=ax²+bx+c

• y=mx+b

• y=x

Does the equation open or or down? y = -3x² +7x - 2

• up

• down

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CCSS.HSF-IF.C.7A

If the a < 0 (negative) the graph opens

• up

• down

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CCSS.HSF-IF.C.7A

If the a > 0 (positive) the graph opens

• up

• down

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CCSS.HSF-IF.C.7A

What is a parabola?

• The straight graph of a quadratic function

• The circular graph of a quadratic function

• The V-shaped graph of a quadratic function

• The U-shaped graph of a quadratic function

Tags

CCSS.HSF-IF.C.7A

How can you tell whether a parabola is facing up or facing down by looking at the equation?

• The vertex tells you the direction of the opening

• The value of "a" tells you the direction of the opening.

• All parabolas open upward

• All parabolas open downward

Tags

CCSS.HSF-IF.C.7A

Which of the following equations is written in the standard form for quadratic equations?

• 8x + 4y = 12

• y = 4x² - 7x + 11

• 3x² + 2x = 1

• 2x² - x³ + 14 = y

What is the vertex of this parabola?

• (−1, 3)

• (−3, 11)

• (−2, 5)

• (0, 5)

What is the vertex of the function   y = (x - 3)² + 5

• (-3, 5)

• (3, -5)

• (-3, -5)

• (3, 5)