Writing Function Rules
9th grade
41 times
Mathematics
77%average accuracy
5 months ago
nlyson
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40 QuestionsShow answers
  • Question 1
    180 seconds
    Q.

    Find the function rule.

    answer choices

    y = 2x

    y = 2x+3

    y = 3x+3

    y = -2x+3

  • Question 2
    180 seconds
    Q. Find the function rule.
    answer choices
    y = -2x +10
    y = -2x -10
    y = 2x +10
    y = 2x-10
  • Question 3
    180 seconds
    Q. A pizzeria charges $12 per pizza plus an additional $3 for delivery. Which equation represents the cost of having any number of pizzas delivered?
    answer choices
    c = 12p + 3
    c = 12p
    c = 3p
    c = 12 + 3p
  • Question 4
    180 seconds
    Q. Identify the function rule that best represents the following statement:
    A bottle rocket is being launched from the roof of an 80 meter tall building. If the rocket travels straight up at a rate of 22 m/s, what is the total height of the rocket as a function of time?
    answer choices
    H = 108x
    H = 80 - 22x
    H = 80 + 22x
    H = 80x + 22
  • Question 5
    180 seconds
    Q. Identify the function rule that best represents the following statement:
    A soda machine sells drinks for 75 cents each. Let d represent the number of drinks bought and C represent the total cost.
    answer choices
    d = $0.75C
    d = $0.75 + C
    C = $0.75 + d
    C = $0.75d
  • Question 6
    180 seconds
    Q. A plumber charges a service fee of $40 plus $25 per hour for labor.
    (A) Write a function rule for the total cost of hiring the plumber for a job that takes x hours.
    (B) How much would it cost to hire the plumber for a job that takes 4 hours?
    answer choices
    (A) y = 40 + 25x
    (B) $140
    (A) y = 40x + 25
    (B) $185
    (A) y = 40 + 25x 
    (B) $185
    (A) y = 40x + 25 
    (B) $140
  • Question 7
    180 seconds
    Q. The school cafeteria has 285 cartons of milk in stock. Each day, a total of 60 cartons are sold. Which function rule best represents this situation?
    answer choices
    y = 285x + 60 
    y = 285x - 60
    y = 285 - 60x
    y = 285 + 60x
  • Question 8
    180 seconds
    Q. A water tank holds 84 gallons. When it began to leak it lost 3 gallons every hour. Write an equation to find the amount of water "y" the tank will have after "x" number of hours.
    answer choices
    y = 84 - 3x
    y = 3 - 84x
  • Question 9
    120 seconds
    Q. Identify the function rule that best represents the following statement:
    The total cost (C) for kilograms of beef (k) if each kilogram costs ​$2.55
    answer choices
    C = 2.55k
    C = 2.55 + k
    C = 2.55 - k
    C = 2.55k + 2.55
  • Question 10
    180 seconds
    Q. Identify the function rule that best represents the following statement:
    An apple rolled off a 4 ft table and fell at an average velocity of 0.8 ft/sec. Let h represent the height off the ground of the apple and t the falling time. 
    answer choices
    h = 4 - 0.8t
    h = 4 + 0.8t
    h = 4.8t
    h = 3.2t
  • Question 11
    180 seconds
    Q. Identify the function rule that best represents the following statement:
    The base price (P) of a pizza is $4.99 plus an additional $0.95 for each topping (t).
    answer choices
    P = 4.99 - 0.95t
    P = 4.99 + 0.95t
    P = 5.94t
    t = 4.99P + 0.95
  • Question 12
    900 seconds
    Q.

    What equation represents this function:

    (1, -1), (2, 5), (3, 15), (4, 29), (5, 47)

    answer choices

    y = -2x2 - 3

    y = 2x2 + 3

    y = 2x2 - 3

    y = x2 - 3

  • Question 13
    900 seconds
    Q.

    What function represents these ordered pairs:

    (2, -16), (3, -19), (4, -22), (5, -25), (6, -28)

    answer choices

    y = -3x - 10

    y = 3x - 10

    y = ⅓x - 10

    y = -⅓x - 10

  • Question 14
    900 seconds
    Q.

    What rule represents this function:

    (1, 8), (3, 18), (5, 28), (7, 38), (9, 48)

    answer choices

    y = -10x + 18

    y = -5x + 13

    y = 10x - 2

    y = 5x + 3

  • Question 15
    900 seconds
    Q. Find the function rule for the function table.
    answer choices
    2/n
    n + 2
    2n
    n - 2
  • Question 16
    900 seconds
    Q. Write the function rule for the following table.
    answer choices
     5x
    5x + 1
     x + 5
     x + 1
  • Question 17
    900 seconds
    Q. Patrick earns $20 for every lawn that he mows. Write an equation used to find t, the total amount of money he earns from mowing n lawns.
    answer choices
    n = 20t
    t = 20n
    t = n + 20
    t = n - 20
  • Question 18
    900 seconds
    Q. A pizzeria charges $12 per pizza plus an additional $3 for delivery. Which equation represents the cost of having any number of pizzas delivered?
    answer choices
    c = 12p + 3
    c = 12p
    c = 3p
    c = 12 + 3p
  • Question 19
    30 seconds
    Q. The output is four times the input.
    answer choices
    y = x/4
    4x
    y = 4x
    y = x +4
  • Question 20
    30 seconds
    Q. The number of multiple-choice questions on a test is ten times the number of open-ended questions.  Write a function that describes the relationship.
    answer choices
    y = 10x
    x = 10y
    y = 10 + x
    x = 10 + y
  • Question 21
    30 seconds
    Q. The output is eight more than the input
    answer choices
    y = x + 8
    x + 8
    x = y + 8
    y = x - 8
  • Question 22
    30 seconds
    Q. The output is eight less than three times the input.
    answer choices
    y = 3x - 8
    3x - 8
    y = 8 - 3x
    8 - 3x
  • Question 23
    30 seconds
    Q. The output is 4 less than half the input.
    answer choices
    y = 2x - 4
    y = 4 - 2x
    y = x/2 - 4
    y = 4 - x/2
  • Question 24
    30 seconds
    Q. The cost of admission for a student is 4 less than the cost of admission for an adult.
    answer choices
    x - 4
    4 - x
    y = 4 - x
    y = x - 4
  • Question 25
    30 seconds
    Q. The output is one-third the input.
    answer choices
    1/3x
    3x
    y = 1/3x
    y = 3x
  • Question 26
    30 seconds
    Q. The output is thirteen more than four times the input.
    answer choices
    y = x/4 + 13
    y = 4x + 13
    y = 4x - 13
    y = 4/x - 13
  • Question 27
    30 seconds
    Q. Which equation matches the table?
    answer choices
    y = x + 5
    y = 5x
    y = x - 5
    x = y - 5
  • Question 28
    30 seconds
    Q. Which equation matches the table?
    answer choices
    y = x + 5
    y = 6x
    y = x + 6
    times 6
  • Question 29
    30 seconds
    Q. Which equation matches the table?
    answer choices
    y = 3x + 9
    y = x + 9 
    y = x + 3
    y = 12x - 3
  • Question 30
    300 seconds
    Q. What is the function of the table?
    answer choices
    y=x*2
    y=x+2
    y=x/2
    y=x-2
  • Question 31
    60 seconds
    Q. What is the function of the table?
    answer choices
    y=3x+1
    y=4x-2
    y=x+1
    y=x+7
  • Question 32
    60 seconds
    Q. y=x-6
    What is the missing number?
    answer choices
    12
    10
    14
    13
  • Question 33
    300 seconds
    Q. What is the equation of the linear function?
    answer choices
    y = -3x + 10
    y = -3x + 16
    y = 3x + 10
    y = 3x + 16
  • Question 34
    300 seconds
    Q. Which equation matches the table?
    answer choices
    y = x + 5
    y = 5x
    y = x - 5
    x = y - 5
  • Question 35
    180 seconds
    Q. What is the algebraic equation for this table?
    answer choices
    y = 480x
    x = y/480
    x + 480 = y
    480 - x = y
  • Question 36
    180 seconds
    Q. What algebraic equation shows the relationship between the independent and dependent variables?
    answer choices
    y = ax
    y = x + 12
    y = -3x
    y = 
  • Question 37
    180 seconds
    Q. Which equation matches the table?
    answer choices
    y = x 
    y = 5x
    y = x - 4
    y = x + 4
  • Question 38
    180 seconds
    Q. Zara made an initial deposit to a bank account and then added a fixed amount every week. The table shows the money in her account. Write an equation in slope-intercept form to represent the situation. (click here to remove the question)
    answer choices
    y = 30x + 100
    y = 20x + 120
    y = 120x + 120
    y = 50x + 100
  • Question 39
    180 seconds
    Q. The table shows Eli’s distance from home as he rides his bike at a steady rate after meeting a friend. . Write an equation in y = mx + b form that represents the miles, y, that Eli goes in x hours. 
    answer choices
    y = 2x + 2
    y = 12x + 12
    y = 12x + 2
    y = 2x + 12
  • Question 40
    300 seconds
    Q. Given the table, write the equation in the slope-intercept form.
    answer choices
    y = 1/3x + 6
    y = 3x + 6
    y = 2x + 6
    y = 1/2x + 6
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