Question

If the intersection point of the equations 3p – 2q + 23 = 0 and –2p + q – 13 = 0 on the graph is (p,q), then the value of (3p + q) is equal to: यदि ग्राफ पर समीकरण 3p – 2q + 23 = 0 and –2p + q – 13 = 0 और–2p + q – 13 = 0 का प्रतिच्छेदन बिन्दु (p, q) है तो ( 3p + q) का मान ________होगा।

• A. 2
• B. –1
• C. –2
• D. 1

Answer 1

Answer: (C)

3p – 2q + 23 = 0 ….(i) –2p + q – 13 = 0 q = 2p + 13 …..(ii) समी (i) में q का मान रखने पर– 3p – 2 (2p + 13) + 23 = 0 3p – 4p – 26 + 23 = 0 –p – 3 = 0 p = – 3 ज् का मान समी (ii) में रखने पर– q = 2 (–3) + 13 q = –6 + 13 q = 7 3p+q = 3 (–3) + 7 ⟹ – 9 + 7 = – 2