Directly and Proportional Graphs and Equations

Which of the following graphs shows a linear proportional relationship?

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• 
• 
• 

Tags

CCSS.8.EE.B.5

x varies directly with y. If x = 30 when y = 15, what is y when x = 25?

• y = 50

• y = 13

• y = 12.5

• y = 18

The graphs y = 2x + 3 and y = x + 8 are shown on the grid. What is the solution to the equations?

• (3,8)

• (8,3)

• (2,7)

• (7,2)

Tags

CCSS.8.EE.C.8B

The graphs of two lines are shown on the grid. What is the intersection point of the equations?

• (4,3)

• (2,4)

• (4,4)

• (4,2)

Tags

CCSS.8.EE.C.8B

At what point do the following lines intersect? y = 4/3x + 1 and y = 3/4x + 1

• (1,0)

• (0,1)

• (3,4)

• (4,3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which of the following best describes this table?

• This table is non-proportional because b = 0

• This table is proportional because b = 0

• This table is non-proportional because  b $\ne$  0

Tags

CCSS.7.RP.A.2A

The number of essays Ms.Bucher can write varies directly with the amount of time she spends writing them. She can write 3 essays in 2 hours. How many essays can Ms.Bucher write in 5 hours?

• 3/5

• 6/5

• 15/2

• 7

What is the best prediction of height when your arm span is 120cm?

• 112

• 125

• 120

• 140

If y varies directly with x and y = 12 when x = 3, what is the value of y when x = 6?

• 18

• 24

• 36

• 6

If y varies directly with x and y = 6 when x = 2, what is the value of y when x = 8?

• 12

• 18

• 24

• 32