Special Linear Relationships

Question 1

Which linear relationship can be described as a function with direct variation?

Revolt · Accepted Answer

B: [Image: A coordinate plane with a line passing through (ne...]

Question 2

✔ 1/91/339

Revolt · Accepted Answer

A: ✔ 1/9

Question 3

✔ f(n) = –3n + 23f(n) = –3n + 61f(n) = 20 – 3nf(n) = 20n – 3

Revolt · Accepted Answer

A: ✔ f(n) = –3n + 23

Question 4

A prepaid cell phone charges a preset number of minutes to use text messaging. The graph represents y, the number of minutes used for x, the number of text messages sent and received. Is there a direct variation? Which equation represents the relationship?

Revolt · Accepted Answer

D: No, y = x + 20.

Question 5

This sequence represents the diameters of circles used to create an art project:2.5 cm, 3.1 cm, 3.7 cm, 4.3 cmLet f(n) represent diameter in centimeters and n the term number in the sequence. Which equation represents the sequence of diameters?

Revolt · Accepted Answer

A: f(n) = 0.6n + 1.9

Question 6

$1.25✔ $1.75 $2.25 $2.75

Revolt · Accepted Answer

B: ✔  $1.75

Question 7

What other points are on the line of direct variation through (5, 12)? Check all that apply.(0, 0)(2.5, 6)(3, 10)(7.5, 18)(12.5, 24)(15, 36)

Revolt · Accepted Answer

A: (0, 0); B: (2.5, 6); D: (7.5, 18); F: (15, 36)

Question 8

Consider the sequence of numbers: , , 1, 1 , 1, . . . Which statement is a description of the sequence?

Revolt · Accepted Answer

D: The sequence is arithmetic and can be represented by the function f(n + 1) = f(n).

Question 9

✔ y = (1/9)xy = (1/3)xy = 3xy = 9x

Revolt · Accepted Answer

A: ✔ y = (1/9)x

Question 10

8 9✔ 10 11

Revolt · Accepted Answer

C: ✔  10

Special Linear Relationships Answers

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