Algebra practice question

Answer: 3

Reflecting across the x-axis replaces y with −y: −y = 2x − 3, so y = −2x + 3, whose y-intercept is 3.

Common wrong answers

If you answered 2

2 is the original slope, which becomes −2.

If you answered -3

−3 is the original line's y-intercept; the reflection flips its sign.

If you answered 1.5

1.5 is the x-intercept, which does not move under this reflection.

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