Substitute x = 5 minutes into the equation y = 3x, which models the water level. This gives y = 3 × 5 = 15. Therefore, the water level reaches a height of 15 cm. NCERT Solution for Class 9 Ganita ...
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The y-intercept is 0 because the line crosses the y-axis at the origin (0, 0). It signifies that when the variable x equals zero, the corresponding value of y is also zero. Cbse released Class 9 Ganita Manjari Part 2 book
Using the points (0, 0) and (2, 6), the slope is calculated as the ratio of rise to run: (6 − 0) / (2 − 0) = 6 / 2 = 3. Thus, the line has a slope of 3. Ganita ...
Let the stool height be h and the cat height be c. The diagrams give h + c = 85 and h − c = 25. Adding both equations gives 2h = 110, which results in a stool height of ...
Let a pencil cost ₹x and a pen ₹y. Equations are 5x + 7y = 50 and 7x + 5y = 46. Adding gives x + y = 8. Subtracting gives x − y = −2. Solving yields x = ...