A) 2
B) 0
C) 4
D) 1
Correct Answer: A
Solution :
Solving \[3x+4y=9,\,y=mx+1\] we get \[x=\frac{5}{3+4m}\] x is an integer if \[3+4m=1,\,-1,\,5,\,-5\] \ \[m=\frac{-2}{4},\,\frac{-4}{4},\,\frac{2}{4},\,\frac{-8}{4}\]. So, m has two integral values.You need to login to perform this action.
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