1. If 9 students sharpen 18 pencils in 2 minutes, how many students will it take to sharpen 18 pencils in 1 minute?
A.) 2
B.) 9
C.) 18
D.) 36

2. If y varies inversely with x, and y = –16 when x = –64, what is the constant of variation?
A.) 16
B.) 64
C.) 100
D.) 1,024

3. The pair of points (3, 8) and (x, 6) are on the graph of an inverse variation. What is the missing value?
A.) 4
B.) 3
C.) -1
D.) 1

Question

1. If 9 students sharpen 18 pencils in 2 minutes, how many students will it take to sharpen 18 pencils in 1 minute? 
A.) 2
B.) 9
C.) 18
D.) 36

2. If y varies inversely with x, and y = –16 when x = –64, what is the constant of variation?
A.) 16
B.) 64
C.) 100
D.) 1,024

3. The pair of points (3, 8) and (x, 6) are on the graph of an inverse variation. What is the missing value?
A.) 4
B.) 3
C.) -1 
D.) 1

anonymous · Answer

1)c

anonymous · Answer

3) d i think

anonymous · Answer

4. The weight needed to balance a lever varies inversely with the distance from the fulcrum to the weight. A 120-lb weight is placed on a lever, 5 ft from the fulcrum. What amount of weight, in pounds, should be placed 8 ft from the fulcrum to balance the lever? 
A.) 120
B.) 75
C.) 8
D.) 125

5. In the inverse variation equation xy/4 = -3, what is the constant of variation?

A.) -3
B.) 4
C.) -12
D.) -3/4

6. What is the graph of y = 4/x?

anonymous · Answer

4) d i think

anonymous · Answer

I need help not people guessing. @skinny23

anonymous · Answer

5) c

anonymous · Answer

sorry..

anonymous · Answer

Did you just guess on all? @skinny23

anonymous · Answer

no

anonymous · Answer

Which ones did you guess on? @skinny23

anonymous · Answer

just 3 n 4 cuz i dont know them for sure

anonymous · Answer

What about number one?

anonymous · Answer

number 1 is c

anonymous · Answer

How?

anonymous · Answer

because if it takes 2 minutes for 9 people to sharpen 18 pencils then if you double the students for one minute

anonymous · Answer

For 2, if y varies inversely with x, then $\Large y = {k \over x}$ where k is the constant of variation, when y = -16 x = -64 so $\Large -16 = \frac{k}{-64}$, $k = -16 * - 64 = 1024$

For 3, same kind of approach:
y = k/x, when x = 3, y = 8 so k = 24
y = 24/x 
(x, 6) is on the graph y = 24/x so 6 = 24/x, x = 4

anonymous · Answer

What about 4 or 5? @Meepi

help_needed_cudi · Answer

4. The weight needed to balance a lever varies inversely with the distance from the fulcrum to the weight. A
120-lb weight is placed on a lever, 5 ft from the fulcrum. What amount of weight, in pounds, should be placed
8 ft from the fulcrum to balance the lever? (1 point)
120
75<<<<<answer
8 
125

help_needed_cudi · Answer

$$120 * 5 = 8 * x $$ $$8 \div 600 = 8x \div 8$$$$75 = x$$

help_needed_cudi · Answer

oh n 6. btw is a graph this is the right answer