Question

Solve each system of linear equations.
1/
y=2x_3
y_2x=_3
Answer:
0=0

2/
3x+y=4
_3x=y_7
Answer:
0=3 or 0=11

3/
y=_4x+1
4x=_y_6
answer:
0=5 or 0=7

4/
Y_x+3=0
X=y+3
answer:
0=0
Please,if the answers were wrong, helpe me for solve them

Answer 1

Use - for subtraction
#1, if you get 0=0, there will be an infinite number of solutions
(You are intersecting a line with itself, really just have one line)

#2
3x+y=4 or y = 4 -3x
-3x=y-7 or y = 7-3x
then 4-3x = 7-3x
4 = 7 , contradiction, so there is no solution.
(So you actually trying to intersect two distinct separate lines)

#3,
y=_4x+1 or y = 4x+1
4x=_y_6 or y = -4x-6
4x+1 = -4x-6
8x = -7
x = -7/8, then y = -28/8 + 1 = -5/2

#4, yes
but what is your conclusion as to answers ?