# Ia2 Support : Functions Formative Assessment (Form B)

5 Questions | Total Attempts: 43  Settings  Choose the best answer for each question. Good Luck!

• 1.
The school chorus had a car wash for their fundraiser. They charged a certain amount of money to was each car. This table shows how f(x), the total amount in dollars that the car wash raised, is a function of x, the number of cars that were washed.x:       0    1    2    3     4     5    6   ...f(x):    0    3    6    9    12   15   18  ...Suppose you plotted points for this function on a grid. Would you connect the points?
• A.

No, because the domain only includes integers greater than or equal to 0.

• B.

No, because the domain includes both negative and positive integers.

• C.

Yes, because the domain includes fractions as well as positive integers.

• D.

Yes, because the domain includes both negative and positive integers.

• 2.
The five ordered pairs below reprsent a function.{(-1, 4), (-3, 5), (0, 6), (2, 5), (3,2)}.What is the range for this function?
• A.

{3, -1, 0, 2, 3}

• B.

{3, -1, 0, 2, 3, 2, 4, 5, 6}

• C.

{2, 4, 5, 6}

• D.

All real numbers greater than or equal to 2 and less than 6

• 3.
Which describes the symmetry of the function y = x2 + 4?
• A.

Not symmetric to any axis or to the origin

• B.

Symmetric with respect to the x-axis

• C.

Symmetric with respect to the y-axis

• D.

Symmetric with respect to the origin

• 4.
Which of the following relations below is not a function?A. {(1,2), (2,4), (3,6), (4,8)}B. {(0,2), (1,2), (2,2), (3,2)}C. {(0,1), (1,2), (1,3), (2,4)}D. {(1,2), (2,2), (3,4), (4,4)}E. {(1,5), (2,6), (3,7), (4,8)}
• A.

Relation A is not a function.

• B.

Relation B is not a function.

• C.

Relation C is not a function.

• D.

Relation D is not a function.

• E.

Relation E is not a function.

• 5.
What is the y-intercept of the graph of 3y - 2x = 18?
• A.

18

• B.

2/3

• C.

6

• D.

-6

• E.

-2/3

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