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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

bobbym
2013-07-16 01:00:25

You are welcome, post if you need more.

TryingMyBest50
2013-07-16 00:54:29

Ok, i see that i should've have added the 3 - 11. Thank you so much!smile Have a great morning!

bobbym
2013-07-16 00:32:29

Hi;

In line 2) 4x - 6x = -2x

In your line 3) -3 - 11 = -14

Here is how to do it.

4x + 11 < 6x - 3

Take 4x away from both sides.

11 < 2x - 3

Add 3 to both sides.

14 < 2x

Divide both sides by 2.

7 < x

Or

x > 7

TryingMyBest50
2013-07-16 00:29:39

Ok, if you had to change 4x+11=6x-3 into a linear inequality how would you do it, and how would you solve it?

bobbym
2013-07-16 00:17:30

Hi;

I am not getting that. Please recheck your work.

TryingMyBest50
2013-07-16 00:07:46

Good morning bobbym. Would i solve it like this

4x + 11 < 6x - 3

4x - 6x + 11 < - 6x - 6x - 3

2x + 11 -11 < -3 - 11

2x < - 8

-2x/-2 < -8/-2 = x < 4

and check it

4(4) + 11 < 6(4) - 3

16 + 11 < 24 - 3

27 < 27

bobbym
2013-07-14 02:54:23

Post #25 does that for all 4 possibilities.

TryingMyBest50
2013-07-14 02:44:27

No, i just need to change my 1-variable linear equation to a linear inequality using < or >.

bobbym
2013-07-14 02:24:49

Hi;

There is no reason to replace the equality with either of those that I understand. It is totally arbitrary.

Is there more to the question? Have you left anything out?

TryingMyBest50
2013-07-14 02:16:59

So i would solve the linear inequality problem the same way i solve the linear equation, but replace the equal sign with < or >

bobbym
2013-07-14 02:09:46

4x+11<6x-3 or 4x+11>6x-3 or 4x+11≤ 6x-3 or 4x+11 ≥ 6x-3

TryingMyBest50
2013-07-14 02:03:12

I need to turn this linear equation 4x+11=6x-3 into a linear inequality.

bobbym
2013-07-14 01:54:55

Which one?

TryingMyBest50
2013-07-14 01:52:07

ok, so how would you solve the equation using < or >.

bobbym
2013-07-14 01:39:10

Why couldn't you just replace the = with a < or a >?

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