Bunuel wrote:
If -3x < 6, which of the following must be true?
A. x < -3
B. x < -2
C. x > 3
D. x > -2
E. x > 0
We can divide both sides of the inequality by -3 (and don’t forget to switch the inequality sign) to obtain:
x > -2
Answer: D
If -3x < 6, which of the following must be true?
A. x < -3
B. x < -2
C. x > 3
D. x > -2
E. x > 0
We can divide both sides of the inequality by -3 (and don’t forget to switch the inequality sign) to obtain:
x > -2
Answer: D
