If x > -4, then which of the following must be true?

　
x > −4
x+4 > 0
4 > −x

−x < 4

or

Start with x > −4, Multiply both sides by −1
When multiplying or dividing both sides of inequality by negative number, we must change direction of inequality:

x > −4
−1*x < −1*−4
−x < 4

c

Ans. C.

x > -4
-x < 4

changing the signs reverses the inequality sign

Ifx4