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algebraA line passes through and . What is its slope?
A
Undefined
B
C
D
Correct Answer: A
Choice A is the correct answer. Vertical line check.
- Check x: Both x-coordinates are 3.
- Conclusion: Vertical line ().
- Slope: Undefined.
💡 Strategic Tip: Division by zero () in the denominator means undefined slope.
Choice B is incorrect.Choice C is incorrect.Choice D is incorrect.