Question
A part of family budget on milk is constant and is fixed at र 500, while the other is variable and it depends on the need for milk at the rate oft 20 per litre. If extra milk taken is x litre and total expenditure on milk is रy, then write a linear equation for this problem. Draw its graph.
Solution
According to the question, the linear equation for the given problem is
⇒ y = 500 + 20x ...(1)
Table of solutions
|
X |
0 |
5 |
|
y |
500 |
600 |
We plot the points (0, 500) and (5, 600) on a graph paper and join the same by a ruler to get the line which is the graph of the equation (1).
