can u answer this w/ checking: 1/2x - y=3 and x + 2=0 plzz!!?

Question

pls!!! can you answer

Answer 1

from equ 1
x=2(3+y)=6+2y

putting in equ2
6+2y+2=0
2y=-8
y=-4

putting y in modifiyed equ1
x=6+2y
x=6-8
x=-2

Answer 2

If x+2=0, then
x= -2
So now, substitute -2 in for x in the first equation:
½(-2) - y = 3
-1 - y = 3
-y = 4
y = -4

so for the check, you just put -2 and -4 in for x any y in the original equations and make sure that it comes out right

½(-2) - (-4) = 3
-1 + 4 = 3
3 = 3 yes, that works

-2 + 2 = 0
0 = 0 yes that one works too. It's right!

so x = -2 and y = -4

Answer 3

The second question is

x + 2 = 0
x = 0 -2
x = -2

Check

x + 2 = 0
Sub in for X
(-2) + 2 = 0

Answer 4

Solve x first: x + 2 = 0, then x = 0-2= -2.

Plug in -2 into x for the first formula:

1/2(-2)-y=3
-1-y=3
-y=3+1
-y=4
y=-4

Answer 5

first solve the x problem to get -2 because -2+2=0 and then u solve the y problem by subsiuting the xwell x= negitive 2 and y equals negitive 4 so it will be -1- (-4)=3 since two negitives makes a positive when added side by side it would be -1+4=3 to check 1/2x -y=3, then -1-(-4)=3 then check to see if it is correct

Answer 6

Well, you need to specify the problem a little more clearly. Is it
1) 1 / (2x) - y = 3
2) (1/2)x - y = 3
Using the second problem to find x
x + 2 = 0
x = -2

Insert in the first problem
1) 1 / (2x) - y = 3
1 / (2*-2) - y = 3
-1/4 - y = 3
y = -(13/4)
check
1/(2x) - (-13/4) = 3
1/(2x) + 13/4 = 3
1/2x = -1/4
2x = -4
x = -2

2) (1/2)x - y = 3
1/2(-2) - y = 3
-1 - y = 3
y = -4
check
(1/2)x - (-4) = 3
1/2x = -1
x = -2

Answer 7

x + 2 = 0
x + 2 - 2 = 0 - 2
x = -2

1/2(-2) - y = 3
-1 - y = 3
-1 + 1 - y = 3 + 1
-y = 4
y = -4

1/2(-2) - -4 = 3
1/2(-2) + 4 = 3

-1 + 4 = 3

x = 2
y = -4

Answer 8

x + 2 = 0
x + 2 - 2 = 0 - 2
x = -2

1/2(-2) - y = 3
-1 - y = 3
-1 + 1 - y = 3 + 1
-y = 4
y = -4

1/2x - (-4) = 3
1/2x + 4 = 3
1/2x +4 - 4 = 3 - 4
1/2x = -1
2(1/2x) = -1(2)
x = -2

-2 + 2 = 0
0 = 0

Answer 9

Y=1/2x-3
X=-2
Thus, Y=-4

Answer 10

ok first you solve th problem x+2=0 and yu gen negative 2 so x=negative 2 and then you substitute -2 in the equasion 1/2x-y =3 and you get -4 so the answer is (-2,-4) or x=-2 and y=-4

Answer 11

1. x +2 =0
x +2(-2) = 0-2 whatever you do to one side is done to the other.
x=-2
2. 1/2 (-2) - y= 3 sub -2 for x
-1-y = 3
-1-y (+y) =3 (+y) want to get the variable to one side.
-1=3+y
-1(-3)=3 (-3)+y
-4=y
answer y=-4; x=-2