If the simultaneous linear equations in x and g, y=kx+m and y=(2k−1)x+4 have at least one solution, where k and m are constants, find the possible values of k and m
Q. If the simultaneous linear equations in x and g, y=kx+m and y=(2k−1)x+4 have at least one solution, where k and m are constants, find the possible values of k and m
Identical Lines Case: For the two linear equations y=kx+m and y=(2k−1)x+4 to have at least one solution, they must either be the same line (infinite solutions) or intersect at a single point (one solution). To find the possible values of k and m, we can equate the two equations since they both equal y.
Identical Lines Case: Setting the equations equal to each other gives us kx+m=(2k−1)x+4.
Intersecting Lines Case: To find the possible values of k and m, we need to consider two cases: either the lines are identical (infinite solutions) or they intersect at exactly one point (one solution). If the lines are identical, the coefficients of x and the constant terms must be equal in both equations.
Identical Lines Solution: For the lines to be identical, we must have k=2k−1 and m=4. Solving the first equation for k gives us k=1. Plugging k=1 into the second equation, we get m=4.
Intersecting Lines Solution: If the lines are not identical but intersect at one point, then the slopes (coefficients of x) must be different. This means k=2k−1. Solving for k, we get k=1. In this case, m can be any real number since the lines will intersect at one point regardless of the value of m.
Final Conclusion: Therefore, the possible values for k and m are k=1 and m=4 for the case of identical lines, and for the case of intersecting lines, k can be any real number except 1, and m can be any real number.