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.
Advertisements
उत्तर
\[\text{ Since it is a direct variation, } \frac{x}{y} = k . \]
\[\text{ For x = 3 and y = 12, we have: } \]
\[k = \frac{3}{12} = \frac{1}{4}\]
\[\text{ Thus, in all cases, k } = \frac{1}{4}\]
संबंधित प्रश्न
Which of the following are in inverse proportion?
The population of a country and the area of land per person.
In which of the following table x and y vary inversely:
| x | 4 | 3 | 6 | 1 |
| y | 9 | 12 | 8 | 36 |
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?
16 taps can fill a petrol tank in 18 minutes. The time taken for 9 taps to fill the same tank will be _________ minutes
Forty students stay in a hostel. They had food stock for 30 days. If the students are doubled then for how many days the stock will last?
A toy company requires 36 machines to produce car toys in 54 days. How many machines would be required to produce the same number of car toys in 81 days?
A flood relief camp has food stock by which 80 people can be benefited for 60 days. After 10 days 20 more people have joined the camp. Calculate the number of days of food shortage due to the addition of 20 more people?
If one angle of a triangle is kept fixed then the measure of the remaining two angles vary inversely with each other.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Compound interest on a given sum and the sum invested.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
The height of a tree and the number of years.
