1. The volume of a rectangular box is found by multiplying length, breadth and height. Here, the length is 7 cm and the breadth is 11 cm. For height 5 cm, the volume becomes 7 multiplied by 11 multiplied by 5, which equals 385 cubic cm. For heights 9 cm and 13 cm, the volumes become 693 cubic cm and 10Read more

    The volume of a rectangular box is found by multiplying length, breadth and height. Here, the length is 7 cm and the breadth is 11 cm. For height 5 cm, the volume becomes 7 multiplied by 11 multiplied by 5, which equals 385 cubic cm. For heights 9 cm and 13 cm, the volumes become 693 cubic cm and 1001 cubic cm respectively. If the height is represented by h, then the linear expression for the volume of the box is 77h cubic cm.

     

    For more NCERT Solutions for Class 9 Maths Ganita Manjari Chapter 2 Introduction to Linear Polynomials (2026-27):

    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/ganita-manjari-chapter-2/

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  2. Sarita has a book containing 500 pages and reads 20 pages every day. In 15 days, she reads 20 multiplied by 15, which equals 300 pages. Therefore, the number of pages left becomes 500 minus 300, which equals 200 pages. If n represents the number of days, then the number of pages remaining can be wriRead more

    Sarita has a book containing 500 pages and reads 20 pages every day. In 15 days, she reads 20 multiplied by 15, which equals 300 pages. Therefore, the number of pages left becomes 500 minus 300, which equals 200 pages. If n represents the number of days, then the number of pages remaining can be written as 500 minus 20n. This expression forms a linear pattern because the number of pages decreases by the same amount every day.

     

    For more NCERT Solutions for Class 9 Maths Ganita Manjari Chapter 2 Introduction to Linear Polynomials (2026-27):

    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/ganita-manjari-chapter-2/

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  3. The linear function C(d) = 100 + 60d represents the total journey cost, where d is the distance travelled in kilometres. The fixed charge is 100 rupees and the cost increases by 60 rupees for every kilometre. For example, when d equals 0, the cost is 100 rupees and when d equals 1, the cost becomesRead more

    The linear function C(d) = 100 + 60d represents the total journey cost, where d is the distance travelled in kilometres. The fixed charge is 100 rupees and the cost increases by 60 rupees for every kilometre. For example, when d equals 0, the cost is 100 rupees and when d equals 1, the cost becomes 160 rupees. The pattern continues with a constant increase of 60 rupees each time. Therefore, this function represents linear growth because the increase remains fixed.

     

    For more NCERT Solutions for Class 9 Maths Ganita Manjari Chapter 2 Introduction to Linear Polynomials (2026-27):

    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/ganita-manjari-chapter-2/

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  4. The height of water in the tank at the start of summer is 3 metres. According to the function h(t) = 3 minus 0.5t, the water level decreases by 0.5 metre every month. For example, after 1 month, the height becomes 2.5 metres and after 2 months, it becomes 2 metres. Since the height decreases by theRead more

    The height of water in the tank at the start of summer is 3 metres. According to the function h(t) = 3 minus 0.5t, the water level decreases by 0.5 metre every month. For example, after 1 month, the height becomes 2.5 metres and after 2 months, it becomes 2 metres. Since the height decreases by the same amount every month, the pattern represents linear decay. The variable t shows the number of months, while h gives the water height.

     

    For more NCERT Solutions for Class 9 Maths Ganita Manjari Chapter 2 Introduction to Linear Polynomials (2026-27):

    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/ganita-manjari-chapter-2/

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    • 169
  5. The plant is initially 1.75 feet tall and grows by 0.5 feet every month. After 7 months, its height becomes 1.75 plus 0.5 multiplied by 7, which equals 5.25 feet. A table from 0 to 10 months will show a regular increase of 0.5 feet each month. If t represents the number of months and h represents thRead more

    The plant is initially 1.75 feet tall and grows by 0.5 feet every month. After 7 months, its height becomes 1.75 plus 0.5 multiplied by 7, which equals 5.25 feet. A table from 0 to 10 months will show a regular increase of 0.5 feet each month. If t represents the number of months and h represents the height, then the relation is h = 1.75 + 0.5t. This represents linear growth because the increase is constant every month.

     

    For more NCERT Solutions for Class 9 Maths Ganita Manjari Chapter 2 Introduction to Linear Polynomials (2026-27):

    https://www.tiwariacademy.com/ncert-solutions/class-9/maths/ganita-manjari-chapter-2/

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