After 3 years, the phone value becomes 7600 rupees. The relation between value and years is v = 10000 minus 800t. It represents linear decay because the value decreases by a fixed 800 rupees every year.
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After 7 months, the plant height becomes 5.25 feet. The relation between height and months is h = 1.75 + 0.5t. It represents linear growth because the height increases by a constant 0.5 feet every month.
The water level starts at 3 metres and decreases by 0.5 metre every month. After each month, the height reduces regularly. This forms a linear decay pattern because the decrease remains constant with time.
The journey starts with a fixed cost of 100 rupees. The cost increases by 60 rupees for every kilometre travelled. For distances from 0 to 10 km, the costs form a linear growth pattern with constant increase.
The volume of a rectangular box is length multiplied by breadth multiplied by height. The volumes are 385 cubic cm, 693 cubic cm and 1001 cubic cm respectively. The linear pattern representing the volume is 77h.