if the point (5, 8) and (3, 2) lie on the graph of line a x + b y = 5 find the value of a and b
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Answer: 5a+8b=5
3a+2b=5 which gives 12a+ 8b=20
12a+8b-5a-8b= 15
a = 15/7
b = (35-75)/7
= -40/7
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