I NEED SOMEONE WHO IS A MATH WHIz. 10 POINTS!!!!!1?

Question

i did these questions and i don't know if i did them right.

1) 1x+-1=3x+-2
x=.6

2) 2+1x=-6
x= -8

3) 1+1x=2x+-1
x=2

4) 2x=-3
x=1.6

I NEED MORE HELP!!!!!!! PLEASE
I NEED TO MAKE EACH EQUATION IN INTERCEPT FORM.

1) Y-4=2X+1
Y=2X+5


2) Y+9=4X+2
Y=4X+-7

3) 3/4X-6=11-Y
Y=3/4+5

2)

Answer 1

1) x - 1 = 3x - 2
2x = 1
x = .5

2)Correct

3)Correct

4) x = -1.5

Answer 2

1. This answer should be x = 1/2 or .5 expressed as a decimal fraction, not .6.
Isolate the variable on one side of the equation to get:

x-3x = -2-(-1)
-2x = -2+1
-2x = -1
x = -1/-2
x = 1/2

2. This answer is correct.

3. This answer is also correct.

4. The answer here is x = -3/2. Just divide both sides of the equation through by 2. Remember, whenever we divide a positive number into a negative number or a negative number into a positive number, the quotient is always negative. Writing the above answer as a decimal fraction yields x = -1.5, not x = 1.6.

Answer 3

no 1. answer is wrong...it should be .5

explanation:

1x+-1=3x + -2

in order to answer this
1. your have to transfer nos..similar variables...

1x should be placed on the other side of the equation
and -2 on the other side; such that

-1 +2=3x-1x ; if the no. is transfered the sign become the opposite (+) will become (-) and (-) becomes (+)

so that solving it -1 + 2 is = 1 ; 3x-1x is 2x
1=2x
1=2x and in order to get the value of x divide bothe equation by 2

giving you 1/2 or 1.5


same thing with no. 4 question...the answer is wrong..it must be -1.5 or -3/2

Answer 4

1) 1x+-1=3x+-2
x - 1 = 3x - 2
1 = 2x
x = 1/2

2) 2+1x=-6
2 + x = -6
x = -8

3) 1+1x=2x+-1
1 + x = 2x - 1
2 = x

4) 2x = -3
x = -3/2

I recommend never using decimals unless you are specifically instructed to do so or you are doing currency equations. Stick with fractions. They are more accurate.

Answer 5

1) 1x+-1=3x+-2
x - 1 = 3x - 2
- 2x = 1 {add 1, subtract 3x}
x = - 1/2 {divide by 2}

2) 2+1x=-6
x = -8 {subtract 2}

3) 1+1x=2x+-1
- 1x = - 2 {subtract 2x, subtract 1}
x = 2

4) 2x=-3
x = -3/2 {divide by 2 - exact answer}

Answer 6

1) 1x -1 = 3x -2>>> add two to both sides and subtract 1 x from each side 1=2 x>>>> x=1/2 or .5

2) subtract 2 from both sides>>>x=4

3) add 1 to each side and subtract 1 x from both sides>> x=2 hooray you got one right!!!

4) x= - 1.5 pretty close

Answer 7

1) 1x+-1=3x+-2
x=.6 wrong
x=1
2) 2+1x=-6
x= -8 correct
3) 1+1x=2x+-1
x=2 correct
4) 2x=-3
x=1.6 wrong
x=-1.5

Answer 8

a) No

b) Yes

c) Yes

d) No

You can always check your answers by substituting in the value you find and seeing if you get a true statement. For instance, let's try it with a)

1(.6) + (-1) = 3(.6) + (-2)
(.6) + (-1) = (1.8) + (-2)
(-.4) = (.2)

Since -.4 does not equal .2 this means that the answer for x is not correct.

Answer 9

1) subtract both sides by 1x and you get -1 = 2x -2
now add 2 to both sides and you have 1=2x
then divide both sides by 2 and you get 1/2 = x

2) subtract both sides by 2 and you get 1x = -8
which is the same as x = -8

3) subtract both sides by x and you get 1 = x - 1
now add 1 to both sides to get 2 = x

4) divide both sides by 2 to get x = -3/2 = -1.5

Answer 10

1) 2x = 1
x = 1/2

2) ur Right!

3) ur Right!

4) x = -3/2 = -1.5