Inverse proportion test, 7 grade

Question Nr. 1 out of 10

In the table, x and y are inversely proportional. Find the missing value.

x	3	6
y	8	?

1

3

8

12

4

Question Nr. 2 out of 10

A car covers a route at 90 km/h in 4 h. How many hours will the same route take at 270 km/h?

1 h

5 h

2 h

7 h

1.3333333333333 h

Question Nr. 3 out of 10

A car covers a route at 50 km/h in 4 h. How many hours will the same route take at 100 km/h?

2 h

5 h

3 h

4 h

9 h

Question Nr. 4 out of 10

If speed over the same distance becomes 2 times greater, how does travel time change? Choose the statement that uses “times” precisely.

2 hours shorter

2 times longer

It does not change

2 times shorter

Question Nr. 5 out of 10

In the table, x and y are inversely proportional. Find the missing value.

x	6	8
y	12	?

16

9

2

7

3

Question Nr. 6 out of 10

A rectangle is 8 cm long and 6 cm wide. What must its width be if the length increases to 16 cm while the area stays constant?

3 cm

18 cm

4 cm

20 cm

11 cm

Question Nr. 7 out of 10

In which situation are the quantities inversely proportional?

Time worked and pay

Speed and travel time for a fixed distance

Side length and square perimeter

Item count and total price

Question Nr. 8 out of 10

The quantities x and y are inversely proportional. When x = 9, y = 10. Find y when x = 18.

13

5

7

6

14

Question Nr. 9 out of 10

4 equally productive workers finish a job in 12 days. How many days will 12 such workers need?

4

1

3

9

8

Question Nr. 10 out of 10

Which pair of ordered pairs can belong to the same inverse-proportion relationship?

(4; 18) and (8; 36)

(4; 18) and (2; 9)

(4; 18) and (8; 9)

(4; 18) and (5; 19)

Test: Inverse proportion