-3x less than or equal to 9 i got the answer x is greater than 3...is this correct

Question

anonymous · Answer

actually it would be greater than -3.  I think.

mathstudent55 · Answer

-3x <= 9
Divide both sides by -3, but when you multiply or divide an inequality by a negative number, the inequality sign changes direction:
-3/3 x >= 9/ -3
x >= -3

anonymous · Answer

but negative 3 would be the correct answer just change my sign?

anonymous · Answer

yeah, you flip the sign when you divide by a negative value.

anonymous · Answer

like if it said 8x-7<or equal to 41 it would be x>or equat to 6...

anonymous · Answer

but in this case above there is no neg number so i can keep my same sign

mathstudent55 · Answer

8x -7 <= 41 
Add 7 to both sides:
8x <= 48
Divide both sides by 8
x <= 6
Since 8 is positive, inequality sign does not flip