Question:
What will be the value of K for which the system of equations 2x + 2y − 5 = 0 and 6x + ky + 7 = 0 has no solution?
K का वह मान क्या होगा जिसके लिए समीकरण निकाय 2x + 2y − 5 = 0 और 6x + ky + 7 = 0 का कोई हल नहीं है?
Options:
- a) 2
- b) 3
- c) 4
- d) 6
- a) 2
- b) 3
- c) 4
- d) 6
correct answer : d)
Explanation:
For no solution, a1/a2 = b1/b2 ≠ c1/c2. So, 2/6 = 2/k => 1/3 = 2/k => k = 6.
कोई हल न होने के लिए, a1/a2 = b1/b2 ≠ c1/c2. इसलिए, 2/6 = 2/k => 1/3 = 2/k => k = 6.