Find the value of k for which each of the following systems of linear equations has an infinite number of solutions:
2x + (k – 2)y = k,
6x + (2k – 1)y = (2k + 5).
Given: 2x + (k – 2)y = k – eq 1
6x + (2k – 1)y = (2k + 5) – eq 2
Here,
a1 = 2, b1 = k – 2, c1 = k
a2 = 6 , b2 = 2k – 1, c2 = 2k + 5
Given that system of equations has infinitely many solution
∴ =
=
=
=
Here,
=
2×(2k – 1) = 6×(k - 2)
4k – 2 = 6k – 12
12 – 2 = 6k – 4k
2k = 10
K = 5
∴ k = 5