एक ग्राफ में दो रेखाएं ((-2,-3)) पर प्रतिच्छेद करती हैं। कौन सा समीकरण युग्म सही है?
Two lines intersect at ((-2,-3)) on a graph. Which pair of equations is correct?
Explanation opens after your attempt
A. (x+y=-5), (2x-y=-1)
Concept
Substituting ((-2,-3)) makes (x+y=-5) and (2x-y=-1) both true. Substituting the intersection point in both equations is the fastest check.
Why this answer is correct
The correct answer is A. (x+y=-5), (2x-y=-1). Substituting ((-2,-3)) makes (x+y=-5) and (2x-y=-1) both true. Substituting the intersection point in both equations is the fastest check.
Exam Tip
((-2,-3)) रखने पर (x+y=-5) और (2x-y=-1) दोनों सही हैं। प्रतिच्छेद बिंदु को दोनों समीकरणों में रखना सबसे तेज जांच है।
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