Number of apples | 1 | 2 | 3 | 4 | 5 |
Cost (in Rs) | 5 | 10 | 15 | 20 | 25 |
Time (in hours) | 6 a.m. | 7 a.m. | 8 a.m. | 9 a.m. |
Distances (in km) | 40 | 80 | 120 | 160 |
Deposit (in Rs) | 1000 | 2000 | 3000 | 4000 | 5000 |
Simple Interest (in Rs) | 80 | 160 | 240 | 320 | 400 |
Answer:
(a) Scale: Horizontal: 2 units = 1 apple Vertical: 1 unit = Rs 5 ? Mark number of apples on horizontal axis. ? Mark cost (in Rs) on vertical axis. ? Plot the points: (1, 5), (2, 10), (3, 15), (4, 20) and (5, 25) ? Join the points. We get a linear graph. (b) Scale: Horizontal: 2 units = 1 hour Vertical: 2 units = 40 km ? Mark time (in hours) on horizontal axis. ? Mark distances (in km) on vertical axis. ? Plot the points (6 a.m., 40), (7 a.m., 80) (8 a.m., 120) and (9 a.m., 160). ? Join the points. We get a linear graph. (i) Distance covered during 7.30 a.m. to 8 a.m. = 120 km ? 100 km = 20 km (ii) The time when the car had covered a distance of 100 km since its start was 7.30 a.m. (c) Scale: Horizontal: 2 units = Rs 1000 Vertical: 2 units = Rs 80 ? Mark deposit (in Rs) on horizontal axis. ? Mark simple interest (in Rs) on vertical axis. ? Plot the points (1000, 80), (2000, 160), (3000, 240) (4000, 320) and (5000, 400). ? Join the points. We get a linear graph. (i) Yes ! The graph passes through the origin. (ii) Interest on Rs 2500 for a year = Rs 200 (iii) To get an interest of? 280 per year, Rs 3500 should be deposited.
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