how do we come to know about sign change bcz in some ques for eg the answer is coming x - Maths - Linear Inequalities

Question

how do we come to know about sign change bcz in some ques for eg
the answer is coming x > - 1 nd the sign is not changing
bt in some sign is chaningingfor eg
= -x > 6
= x < -6
so how do we know about sign change
please do reply i am having my final exams so reply fast !!

Brijendra P. · Accepted Answer

If x>1then multiplying both side by -1 will change the sign-x<-1and if x>-1Then multiplying both side by -1 will also change the sign as, -x<1So it will always happen that multiplying a inequality by negative will change the signof the inequality

how do we come to know about sign change bcz in some ques for eg the answer is coming x > - 1 nd the sign is not changingbt in some sign is chaningingfor eg= -x > 6= x < -6so how do we know about sign changeplease do reply....i am having my final exams...so reply fast !!

how do we come to know about sign change bcz in some ques for eg the answer is coming x > - 1 nd the sign is not changing
bt in some sign is chaningingfor eg
= -x > 6
= x < -6
so how do we know about sign change
please do reply....i am having my final exams...so reply fast !!