What is true about this system?
The lines intersect at exactly one point
The lines are identical
The lines are parallel but not identical
The lines are perpendicular
Correct Answer: C
Choice C is the correct answer. Let's check the relationship.
Step 1: Multiply the first equation by 2:
Step 2: Compare with the second equation:
- Our result:
- Given:
Left sides match, but → Parallel but not identical
Conclusion: No solution (parallel lines that never meet)
💡 Strategic Tip: "Parallel but not identical" is another way of saying "no solution."
Choice A is incorrect because intersecting at one point requires different slopes.
Choice B is incorrect because identical lines would have , which is false.
Choice D is incorrect because both lines have the same slope (2), not perpendicular slopes.