Advertisements
Advertisements
प्रश्न
Find the constant of variation from the table given below:
| x | 3 | 5 | 7 | 9 |
| y | 12 | 20 | 28 | 36 |
Set up a table and solve the following problems. Use unitary method to verify the answer.
उत्तर
\[\text{ Since it is a direct variation, } \frac{x}{y} = k . \]
\[\text{ For x = 3 and y = 12, we have: } \]
\[k = \frac{3}{12} = \frac{1}{4}\]
\[\text{ Thus, in all cases, k } = \frac{1}{4}\]
APPEARS IN
संबंधित प्रश्न
Which of the following are in inverse proportion?
The population of a country and the area of land per person.
It x and y vary inversely, fill in the following blank:
| x | 9 | ... | 81 | 243 |
| y | 27 | 9 | ... | 1 |
Which of the following quantities vary inversely as other?
The number of x men hired to construct a wall and the time y taken to finish the job.
A work-force of 420 men with a contractor can finish a certain piece of work in 9 months. How many extra men must he employ to complete the job in 7 months?
A person has money to buy 25 cycles worth Rs 500 each. How many cycles he will be able to buy if each cycle is costing Rs 125 more?
Mary cycles at 6 km per hour. How long will she take to reach her Aunt’s house which is 12 km away? If she cycles at a speed of 4 km/hr, how long would she take?
6 pipes are required to fill a tank in 1 hour 20 minutes. How long will it take if only 5 pipes of the same type are used?
If 40 workers can do a project work in 8 days, then _________ workers can do it in 4 days
If two quantities p and q vary inversely with each other, then ______
