1.

The number of integral values of `m`for which the x-coordinate of the point of intersection of the lines `3x+4y=9`and `y=m x+1`is also an integer is2 (b) 0(c) 4 (d) 1A. 2B. 0C. 4D. 1

Answer» Correct Answer - A
`"Solving "3x+4y=9, y=mx+1, "we get" `
`x=(5)/(3+4m)`
Here, x is an integer if 3+4m=1,-1,5,-5. Hence m=-2/4, -4/4, 2/4,-8/4. So, m has two integral values.


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