Set 2: Linear Functions (Advanced)

Explanation

Answer: A

Which equation represents the x-axis?

$y = 0$

✓ Correct

$x = 0$

$y = x$

$x = 1$

Detailed Explanation

Choice A is correct. Choice A is the correct answer. Definition of axes. 1. X-axis: All points on this line have a height ( $y$ ) of 0. 2. Equation: $y = 0$ . Strategic Tip: The X-axis is $y=0$ . The Y-axis is $x=0$ . It's counter-intuitive! Choice B is incorrect because it is the y-axis. Choice C is incorrect because it is a diagonal line. Choice D is incorrect because it is a vertical line at 1.

Key Steps:

•

The correct answer is $y = 0$

Why others are wrong:

B: Choice B is incorrect and may result from a calculation error.

C: Choice C is incorrect and may result from a calculation error.

D: Choice D is incorrect and may result from a calculation error.

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