the length and breadth of a hall are 20m and 15m respectively. find the area of 4 Walls of the hall if the height of the hall is
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Pick any value for x, like x = 0, plug it into the equation, and get the value for y. For x = 0,
2(0) + y = 5
y = 5
The ordered pair is (0,5). Find other ordered pairs using the same reasoning.