8th grade IM math Unit 3 Review

Select ALL the points that are on the graph of the line 2x + 4y=20.

• (0, 5)

• (1, 4)

• (0, 10)

• (1, 2)

• (10, 0)

For two weeks, the highest temperature each day was recorded in 4 different cities. Lines l, m, n, and p are graphs of the temperature over time in Lubbock, Memphis, New Orleans, and Phoenix. Which statement is true?

• The high temperature in Lubbock increased as time passed

• The high temperature in Memphis decreased steadily

• Initially, the high temperature was warmer in Phoenix than in Memphis

• The high temperature in Phoenix rose faster than the temperature in New Orleans.

Tags

CCSS.8.F.A.1

CCSS.8.F.A.2

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.F.B.5

CCSS.8.SP.A.3

Jada earns twice as much money per hour as Diego. Diego earns twice as much money per hour as Lin. Select ALL the graphs that could represent how much Jada, Diego, and Lin earn for different amounts of times worked.

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• 
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• 

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.1

CCSS.8.F.A.2

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.F.B.5

CCSS.8.SP.A.3

The graph shows the number of hours Dario worked and the amount he earned. What was Dario's hourly wage?

• $10

• $24

• $12

• $54

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.B.4

CCSS.8.SP.A.3

Line t and 

 $\Delta ECA$  and  $\Delta FDB$  are shown on the coordinate plane. 
Which statements are true? Select ALL that apply.

• The slope AC is equal to the slope of BC.

• The slope of AC is equal to the slope of BD.

• The slope of AC is equal to the slope of line t.

• The slope of line t is equal to  $\frac{EC}{AE}$  

• The slope of line t is equal to  $\frac{FB}{FD}$  

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.B.4

Ingrid types faster than 50 words per minute. which graph could represent the number of words Ingrid can type over time?

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• 

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.F.B.5

CCSS.8.SP.A.3

Larry and Mark each mow lawns in their neighborhoods. Information about each person's earnings is shown.

For both Larry and Mark, the number of dollars earned is proportional to the number of lawns mowed. Which statement correctly compares the amount of money Larry and Mark each earn per lawn.

• Larry earns $2 more than Mark earns per lawn

• Larry earns $5 less than Mark earns per lawn.

• Larry earns $10 more than Mark earns per lawn.

• Larry earns $15 less than Mark earns per lawn.

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.2

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.F.B.5

CCSS.8.SP.A.3

At a local market, the cost of apples is directly proportional to the weight of the apples. Carlos bought 10 pounds of apples for a cost of $15.00. Which graph shows the relationship between the weight of apples, in pounds, and the cost of the apples in dollars?

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Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.B.4

CCSS.8.F.B.5

CCSS.8.SP.A.3

What is the equation of the line that passes through point (4, 12) and has a y-intercept of -2.

• $y=\frac{5}{2}x-2$

• $y=2x-2$

• $y=\frac{7}{2}x-2$

• $y=6x-2$

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

In the coordinate plane below, $\Delta ABC$  is similar to  $\Delta DEF$ .  What is the value of y?

• 3

• 4

• -2

• 6

Tags

CCSS.8.G.A.1

CCSS.8.G.A.3

CCSS.8.G.A.4

CCSS.8.G.A.5