10
QuizMultiple Choice

Inequalities in One Variable

Question 10 • Online Algebra, Function, Number A

Which statement about solving inequalities is true?

Answer
A
Adding the same value to both sides of an inequality does not change the solution set.
B
Subtracting the same value from both sides of an inequality changes the solution set.
C
When dividing both sides of an inequality by the same positive value, it is necessary to reverse the inequality sign.
D
When multiplying both sides of an inequality by the same negative value, it is not necessary to reverse the inequality sign.

Explanation

Adding the same value to both sides preserves the inequality, so it does not change which values satisfy it. For example, x < 3 remains true exactly when x + 2 < 5. Subtracting the same value also preserves the solution set, while multiplying or dividing by a negative value requires reversing the inequality sign; therefore, the other statements are false.

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