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UKMT Intermediate Mathematical Challenge, 2021

Algebra Difficulty 1.0 Junior Find the answer United Kingdom

The line with equation $y = 2x + 3$ is reflected in the $x$ -axis. Which of the following is the equation of the new line?

(A) $y = 2x - 3$ (B) $y = -2x + 3$ (C) $x = 2y + 3$ (D) $y = \frac{1}{2}x + 3$ (E) $y = -2x - 3$

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