check my answer? -3x + 4

Question

check my answer?  -3x + 4 <=  x + 8 
 I got x<=1

ganeshie8 · Answer

looks you forgot to flip inequality when you divided it wid -4

ganeshie8 · Answer

lets do this step by step and see ok :)

anonymous · Answer

so you have to flip is even if you don't multiply or divide by 2 negatives? @ganeshie8

ganeshie8 · Answer

exactly, when u divide or multiply a negative, you need to flip the inequality

ganeshie8 · Answer

-3x + 4 <=  x + 8

ganeshie8 · Answer

wats the first step you did ?

anonymous · Answer

oh darn i have a lot of problems to re-due now haha and i subtracted x from both sides @ganeshie8

ganeshie8 · Answer

oly that thing we need to remember when multiplying/dividing negative...

ganeshie8 · Answer

-3x + 4 <=  x + 8 

subtract x

-3x + 4 <=  x + 8 
-x              -x

-4x + 4 <=  8

ganeshie8 · Answer

wats the next step ?

anonymous · Answer

sub 4 from both sides?

ganeshie8 · Answer

-4x + 4 <=  8 

subtract 4

-4x + 4 <=  8 
       - 4        -4

-4x <= 4

ganeshie8 · Answer

next step ?

anonymous · Answer

divide both sides by -4

ganeshie8 · Answer

so we pause a sec. since we dividing both sides by negative, we need to flop the inequality

ganeshie8 · Answer

-4x <= 4

divide -4

-4x <= 4
  /-4    /-4

x >= -1

anonymous · Answer

how would you graph that?

ganeshie8 · Answer

on a number line

ganeshie8 · Answer

goto -1, and draw an arrow to right side

ganeshie8 · Answer

|dw:1372018940999:dw|

anonymous · Answer

thank you (: will you help me with another?

ganeshie8 · Answer

|dw:1372019031341:dw|