Quadratic Functions Concepts

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 object reached a higher point?

• Function f

• Function g

Tags

CCSS.8.EE.B.5

The x- intercepts of the graph of the quadratic function defined by the expression (x + 6)(x - 6) are...

• x = -5, x = 5

• x = -6, x = 6

• x = -8, x = 8

• x = -7, x = 7

Tags

CCSS.HSF-IF.C.7A

The vertex is at ...

• (0, 20)

• (2.1, 0)

• (0.75, 29)

• (0, 0)

Which expression represents this pattern correctly?

• n^{2 + 1}

• • n² + n

• 2n²

Tags

CCSS.7.EE.A.2

CCSS.HSA.SSE.A.2

Which object was launched from a higher point?

• The one represented by g

• The one represented by f

• They both had the same height

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

Which object was launched with the higher upward velocity?

• f(x)

• g(x)

• Can't tell by the graph

Tags

CCSS.HSF.LE.B.5

Which object landed LAST?

• f(x)

• g(x)

• Unable to tell by the graph

The domain of the graph should only show values for time greater than zero.

• True

• False

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

The height in feet of a thrown football is modeled by the equation f(t) = 6 + 30t - 16t², where time t is measured in seconds. What does the constant 6 mean in this situation?

• 1. The initial upward velocity of the football was 6 feet per second.

• The pull of gravity on the football.

• 1. The football was thrown from 6 feet above the ground.

• The time it took for the football to hit the ground.