Algebra 1 questions?

Question

1: -3x > -9

x > -3
x > 3
x < -3
x < 3


2: When dividing by a negative number, the direction of the inequality symbol MUST be reversed.
True
False
-
-


3: When multiplying by a negative number, the direction of the inequality symbol MUST be reversed.
True
False
-
-


4: -12x < 24
x > -2
x < -2
x < 24
x > 24


5: Note: ≥ is the greater than or equal to symbol and ≤ is the less than or equal to symbol.
-3x ≤ 9

x ≤ -3
x ≥ -3
x ≥ 3
x ≤ 3


6: 2x - 14 < 9x
x > -1/2
x < -1/2
x < -2
x > -2


7: -2 + 4x ≥ 4
x ≥ 3/2
x ≤ 3/2
x ≥ 2/3
x ≤ 2/3


8: 2x + 4 > x + 6
x > 4
x < 4
x > 2
x < 2

Answer 1

1) x < 3
2) True
3) True
4) x > -2
5) x ≥ -3
6) x > -2
7) x ≥ 3/2
8) x > 2

Answer 2

The answer to #2 and #3 are TRUE. Now, using that knowledge, try to solve the other problems.

Hint: Just treat the < or > as you would an equal sign, unless you are multiplying or dividing by a negative number.

Answer 3

I'll just do the first one, since you should learn to do your own homework.

Take a look at the equality first.

-3x = -9

Divide both sides by -3:

x = (-9)/(-3) = 3

So, try both 2 and 4:
-3 * 2 = -6
-3 * 4 = -12

-6 > -9, and
-12 < -9

So, for -3x > -9, x < 3.

Answer 4

1. x< 3
2. True
3. True
4. x > -2
5. x > -3
6. x > -2
7. x > 3/2
8. x > 2

Answer 5

Hey, you post your homework !!!!!!!!!! if I catch you someday I'll take you to your teacher. Use ur own head or ask ur teachers if u have problems. This is not good posting ur homework.

Answer 6

Please do not post your homework unless your actually planning on learning something form it... *sigh* All these people who want the quick way out of doing their homework.