Functions Retest Activity - Unit 2

Which equation represents a nonlinear function?

• y = 2x

• y = 8

• y = ^x/₂ + 8

• y = 3x³ + 8

Tags

CCSS.8.F.A.3

Rhoda and James both sell laptops and earn commission based on the number of laptops sold. In one month, Rhoda earns $100 in commission for each lap top she sells and a base salary of $600. The money James earns for selling laptops in the same month is shown in the graph below.

How much more money does Jame earn in one month for selling 5 laptops?

• $100

• $400

• $850

• $150

Tags

CCSS.8.EE.B.5

Which function has the same rate of change as the linear function that goes through the points (3, 5) and (6, 2)

• y = x + 5

• 
• Linear function that passes through (1, 1) and (2,2)

• y = -1 + x

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

Which equation passes through the following points:

(-4, -5), (-2, -4), (2, -2), (4, -1)

• y = x/2 - 3

• y = 2x - 6

• y = -x/2 -1

• y = x/2 + 3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Pete’s Plumbing charges a flat fee of $28 for a house call and inspection and an additional $35 per hour for any onsite work. Which set of ordered pairs represents a cost function,y, with a greater hourly rate,x, than these charges?

• (3, 109), (5,163), (7, 217)

• (3, 136), (5, 208), (7, 280)

• (6, 174), (9, 261), (12, 348)

• (6, 209), (9, 296), (12,383)

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Which graph shows a linear function?

• 
• 
• 
• 

Adrian rode his bike at a constant speed. He then decreased his speed at a constant rate until stopping. He then rapidly increased his speed before going back to a constant speed. Which graph could model Adrian’s bike ride?

• 
• 
• 
• 

Tags

CCSS.8.EE.B.5

What is the slope of a line that passes through (4, 3) and (-1, 6)

• 1

• -1

• -3/5

• 3/5

Tags

CCSS.8.EE.B.5

Which set of ordered pairs represents a function?

• (-2, 1), (0, 3), (-2,4), (5,1)

• (-3, 2), (-4, 8) (-4, 5) (0, 6)

• (1, -2), (1, -1), (1, 0), (1, 1)

• (-3, 1), (-2, 1), (4, 5), (3, 2)

Tags

CCSS.8.F.A.1

Albert had $250 in his saving account on the first day of the year. He deposited $50 at the end of January and decided to deposit the same amount at the end of every month. Which equation represents his savings, S, after m months?

• S = 50m + 250

• S = 250m + 50

• S = 300m

• S = 50 + 250

Tags

CCSS.HSF-BF.A.1A