Quadratic STAAR

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Tags

CCSS.HSA.APR.B.3

Which value of x is a solution to this equation?

• x = -12

• x = -4

• x = -2

• x = -6

Tags

CCSS.HSA-REI.B.4B

The scatterplot and table show the weekly profit in dollars earned from the sales of pastries at seven different prices. The data can be modeled by a quadratic function.

Which function best models the data?

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A ball was projected from a height (in feet) and it followed the parabola path above. (click to enlarge the picture).

a) What is the maximum (highest) height of the ball? ​ (a)  

b) How long did it take the ball to reach the maximum? ​ (b)  

c) How high was the ball when it was thrown? ​ (c)  

• Exactly 12 feet

• 12.5 feet

• 4 seconds

• 5 second

• 6 feet

• 4.5 feet

A function is shown. f(x) = x² - 6x -27.

Fill in the blanks below to make the statement true.

"The graph of f(x) has a minimum value of ​ (a)   and has zeros at ​ (b)   and ​ (c)   ​

• -27

• -36

• -33

• -42

• -9

• -3

• 0

• 3

• 9

• 4

Tags

CCSS.HSF-IF.C.7A

Which answer choice describes  y = -3x² +7x - 2 accurately?

• opens up with a maximum

• opens up with a minimum

• opens down with a maximum

• opens down with a minimum 

Tags

CCSS.HSF-IF.C.7A

Which of the following represents a quadratic function?

• 1

• 3

• 2

• 5

• 4