Scatterplot and direct variation

Which graph shows an example of direct variation?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

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

• 58.5

• 26

• 3

• 2/13

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

• yes; 1/4

• yes; 2

• yes; 4

• No

Select 2 answers

• (0,0)

• (3,3)

• (3,-3)

• (6,6)

• (-3,-3)

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

• $y=-1x+216$

• 201 pounds

• $y=-2x+216$

• 186 pounds

Tags

CCSS.HSF-LE.A.1B

On a scale of one to 100, your teacher crankiness is directly proportional to the students talking while she is talking. If two students are talking, the teachers' crankiness index is a 5. What is her crankiness index when 6 students are talking? Type the number below

(a)  

Write the equation for the table given. Remember the format for direct variation

(a)  

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

(a)  

The number of cakes sold varies directly with the number of people who attend a fair each day. If 200 cakes are sold when 3000 people attend the fair, which two statements are true? Select two answers

• The number of cakes sold is 275 when 4125 people attend the fair

• The number of cakes sold is 80 when 7500 people attend the fair

• The number of cakes sold is 300 when 2000 people attend the fair

• The number of cakes sold is 650 when 9750 attend the fair

Y varies directly with x, and y is 84 when x is 16. Which equation represents this situation?

• y=1344x

• y=5.25x

• y=100x

• y=4/21x