If the point (3, 4) lies on the graph of the equation3y ax 7, then the value of ‘a’ is : (A) 3 /5 (B)- 3/ 5 (C) -5/ 3 (D) 5/ 3
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Answer: putting x=3 and y=4
3y=ax+7
3(4)=a(3) + 7
12=3a+7
3a=12-7
3a=5
a=5/3
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