MHT CET202410 May 2024Evening ShiftMathematicsPair of LinesActual
The number of integer values of m , for which x -coordinate of the point of intersection of the lines 3 x+4 y=9 and y=m x+1 is also an integer, is
Options
- A2
- B0
- C4
- D1
Correct answer
A. 2
Step-by-step solution
By solving 3 x+4 y=9, y=m x+1 , we get x= 5 3+4 ~m Now, x is an integer, if 3+4 ~m =1,-1,5,-5 m = -2 4 , -4 4 , 2 4 , -8 4 . Since, m = -2 4 , 2 4 do not give integral values of m . m has two integer values.