Which of the following is not a way to represent the solution of the inequality 2x + 1 = 19? x = 9 9

Question

Which of the following is not a way to represent the solution of the inequality 2x + 1 >= 19? 

 x >= 9 

 9 <= x 

 A number line with a closed circle on 9 and shading to the right. 

 A number line with a closed circle on 9 and shading to the left.

anonymous · Answer

either b or d

shubhamsrg · Answer

and why do you say that ?

anonymous · Answer

cause final answer is x <= 9

anonymous · Answer

after you flip the inequality sign

shubhamsrg · Answer

why will you flip it ? why cant it be x>= 9 ?

anonymous · Answer

you have to flip the inequality sign if you divide by any number for the equation to make sense

shubhamsrg · Answer

any no. you say hmm ??

well,,you make a conceptual mistake..
the inequality changes only when you multiply/divide by a negative no. ,,2 ,as we all know,,is a +ve no..

anonymous · Answer

ok