Quadratic Pre Assessment

Identify the intervals of increasing.

• (- ∞, - 3)

• (-3, ∞)

Tags

CCSS.HSF-IF.C.7A

The zeros or roots of the quadratic function described by the graph are:

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

What is an equation of a quadratic function whose zeros are twice the zeros of f\left(x\right)=2x^2-x-10?

Richard predicted that the number of mango trees, x, planted on a farm could yield y=-20x^2+2800x mangoes per year. How many trees should be planted to produce the maximum number of mangoes per year?

• 60

• 70

• 80

• 90

An object is fired straight up with a velocity of 64 ft/s. Its altitude (height) h after t seconds is given by h(t)=-16t^2+64t. When does the projectile hit the ground?

• 3 seconds

• 4 seconds

• 5 seconds

• 6 seconds

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

Is this a max or min?

• max

• min

• cannot be determined

Tags

CCSS.HSF-IF.C.7A

What are the x- intercepts?

• x= 0 and x= -4

• x= 0 and x= 4

• y= 0

• x= 2

Tags

CCSS.HSA.APR.B.3

• True

• False

Tags

CCSS.HSA-REI.B.4B

Solve \[x^2-5x-6 ext{ = }0\]

• x = -1 or x = 6

• x = 1 or x = - 6

• x= -1

• x = -6

Tags

CCSS.HSA-REI.B.4B