Alg.F-IF Strand Review

The quadratic function w(x)= ⅛x² - x - 1models the cross-section of a water reservoir.

The graph has a relative minimum at which point?

• (-3, 4)

• (4, -3)

• (0, -1)

• (0, 4)

Compare the two functions described below. Function 1: above

Function 2: q(x) = 2x - 10 if x < 5 and 10 - 2x if x ≥ 5.

Which of the following statements is true?

• p(10) = q(10)

• p(-5) = q(-5)

• The y-intercepts of p(x) and q(x) are the same.

• The maximum values of p(x) and q(x) are the same.

Which of the following sets of ordered pairs is not a function?

• 
• 
• 
• 

Which two of the following functions have a relative maximum at x = 3?

Use the information provided to answer Part A and Part B.

Kyra is saving money every month toward the purchase of a new set of car tires. The function b(x) = 50x + 25 models the monthly balance, in dollars, of Kyra's "New Tires Fund" x months after she began the fund.

Part A: What is b(6)?

• $200

• $275

• $325

• $450

Use the information provided to answer Part A and Part B.

Kyra is saving money every month toward the purchase of a new set of car tires. The function b(x) = 50x + 25 models the monthly balance, in dollars, of Kyra's "New Tires Fund" x months after she began the fund.

Part B: What is the balance in Kyra's "New Tires Fund" after 3 months?

• $175

• $275

• $375

• $475

• -1

• 0

• 1

• 6

Alexandria was given the function d(x)=x² - 3x - 28 with a domain of {-4, -2, 3, 5, 7}.

Which two of the values below are in the range of ?

• -56

• -38

• -28

• -26

• 0

Janae was assigned to find the vertex of the parabola represented by the quadratic function f(t) = t² + 4t + 7. What is the vertex of the function?

• (0,7)

• (-3,2)

• (-2,3)

• (0,7)