Ineed with problems 2, 3, 5, 6, 11 and 12. i'm having trouble with those .

#2:

(-1)+(1)=0

(this is true)

3(-1)-3(1)=0

-3-3=0

(this is false, it equals -6)

No

#3:

3(1)-2(2)=1

3-4=1

(this is false, it equals -1)

No

#5:

2(2)+(-4)=0

4-4=0

(this is true)

-(2)+2(-4)=10

-2-8=10

(this is false, it equals 6)

No

#6:

3(5)-4(3)=3

15-12=3

(this is true)

4(5)-3(3)=11

20-9=11

(this is true)

Yes

#11:

(I tried translate the graphs to text since I can't add pictures)

Line A crosses through the points (-2,4) and (4,-2)

Line B crosses through the points (-2,0) and (2,4)

Those two lines should intersect at (0,2)

This system is classified as consistent independent

#12:

Line A crosses through the points (-2,5) and (5,-2)

Line B crosses through the points (-2,0) and (0,-2)

Those two lines should NOT intersect, they're parallel to each other

The system is classified as inconsistent

I hope you get a good grade on your work! Be sure to take a short break during your work and do something you enjoy :)

3x^3-x^2+6x-9

d, x=8

step-by-step explanation:

simplifying

4x + -5 = 2x + 11

reorder the terms:

-5 + 4x = 2x + 11

reorder the terms:

-5 + 4x = 11 + 2x

solving

-5 + 4x = 11 + 2x

solving for variable 'x'.

move all terms containing x to the left, all other terms to the right.

add '-2x' to each side of the equation.

-5 + 4x + -2x = 11 + 2x + -2x

combine like terms: 4x + -2x = 2x

-5 + 2x = 11 + 2x + -2x

combine like terms: 2x + -2x = 0

-5 + 2x = 11 + 0

-5 + 2x = 11

add '5' to each side of the equation.

-5 + 5 + 2x = 11 + 5

combine like terms: -5 + 5 = 0

0 + 2x = 11 + 5

2x = 11 + 5

combine like terms: 11 + 5 = 16

2x = 16

divide each side by '2'.