How to change 3x-4y=-2 into slope- intercept
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Given :
A hostel of 500 boys has provisions for 4 days.
To Find :
If the provisions were continued for 20 days, how many students have gone out of the hostel.
Solution :
Let, number of students left after 20 days are x.
Now, provisions are given by :
Also, provisions remains same.
So, initial provision = final provision
Therefore, 100 students have gone out of the hostel.
Hence, this is the required solution.
For this case we have a direct variation of the form:
Where "k" is the constant of proportionality. To find it, we use the following data:
Substituting:
Clearing the value of k:
Thus, the direct variation is given by:
For we have:
Answer:
The value of the direct variation for is: