Quiz 10/13/21

In a direct variation, y=39 when x=3.  Find the value of y when x=2.

• 26
• 3
• 58.5
• 2

Is this a direct variation?

• yes
• no

What ordered pair does a direct variation always go through when graphed?

• (0, 0)
• (1, 0)
• (0, 1)
• (1, 1)

What is another name for k?

• y- intercept
• x 
• slope
• x- intercept

Which of the given graphs is a direct variation?

• A
• B
• C
• D

Is the sequence arithmetic?

17, 9, 1, -7, ...

• Yes

• No

Find the next three terms in the arithmetic sequence:

-33, -24, -15, -6, ...

• -1, 7, 15

• -5, 2, 9

• 3, 12, 21

• -65, -73, -81

Find a₂₀ in the arithmetic sequence: (Hint: Find explicit formula first)

5, 12, 19, 26...

• 145

• 144

• 142

• 138

Is the sequence arithmetic: -3, 3, -3, 3, ...

• Yes
• No

What is the distance from one number to the next in a sequence of numbers that is represented by a (d) in an arithmetic sequence?

• Common denominator
• Common opposites
• Common domain
• Common difference