Case Study Questions for Class 9 Maths Chapter 4 Linear Equations in Two Variables

Case Study Questions for Class 9 Maths Chapter 4 Linear Equations in Two Variables

Case Study Questions

Question 1:

Anil went to buy some vegetables, he bought ‘x’ kgs. of tomato and ‘y’ kgs. of potato. The total cost of vegetables comes out to be of Rs. 200. Now if the cost of 1 kg of tomato is Rs. 50 and 1 kg of potato is Rs. 20, then answer the following questions.

(i) Which of the following equations represent the total cost.
(a) 5x – 2y = 20
(b) 5y + 2x = 20
(c) 5x + 2y = 20
(d) 2x + 5y = 20

(ii) If Anil bought ‘x’ kgs of tomato and 2.5 kgs. of potato, then find the value of ‘x’.
(a) 5
(b) 2
(c) 3
(d) 4

(iii) If Anil bought ‘2’ kgs of tomato and ‘y’ kgs of potato, then find the value of ‘y’.
(a) 5
(b) 2
(c) 3
(d) 4

(iv) The graph of 5x + 2y = 20 cuts x-axis at the point.
(a) (10, 0)
(b) (4, 0)
(c) (0, 0)
(d) it is parallel to x-axis

(v) The graph of 5x + 2y = 20 cuts y-axis at the point.
(a) (0, 10)
(b) (0, 4)
(c) (0, 0)
(d) it is parallel to y-axis