Algebra Chapter 5 Review

 y varies directly with x, and y is 84 when x is 16. What is the constant of proportionality?

• y = (21/4)x
• k= 21
• k= 5.25
• k= 4/21

Write an equation for this relationship.

• y=4x
• y=1/8x
• y=1/4x
• y=8x

The amount of money earned on a job is directly proportional to the number of hours worked.  If $70.00 is earned in 5 hours, how much money is earned in 22 hours of work?

• $2
• $308
• $1.57
• $265

Is the given table a direct variation? If so, what is the constant?

• Yes; 1/4
• Yes; 4
• Yes; 2
• No

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSF.LE.A.2

CCSS.HSS.ID.C.7

Is this a direct variation?
y=2x

• yes
• no

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

Does the relationship represent direct variation?

• Yes
• No

What is the constant of proportionality?

• 8
• 16
• 24
• 2

What type of slope does the graph have?

• Positive
• Negative
• Zero Slope
• Undefined

What type of slope does the graph have?

• Zero
• Undefined
• Negative
• Positive

Find the slope of the line that passes through (10, -8) and (1, 12).

• 20/9
• -20/9
• 4/9
• 9/4