Solution:
Equivalent= When two lines are coincident , they are said to be Equivalent.
Inconsistent= When two lines are parallel , they are said to be Inconsistent.
Consistent= When two lines are intersecting, they are said to be consistent.
1. {(y=3x-2),(3x-y+4):}
y=3x-2, y = 3x +4
Both lines have same slope, i.e 3 , they are parallel.(Inconsistent)
2. {((1)/(2)y=-x+5),(2y=-4x+20):}
y = -2 x +10, y = - 2 x + 10
Both lines have same slope, i.e (-2) , they are Coincident.(Equivalent)
3. {(y=-x+4),(x=-y-6):}
y= -x + 4, y = -x -6
Both lines have same slope, i.e (-1) , they are parallel.(Inconsistent)
4. {(y=4x+2),(y=6x-10):}
Both lines have different slope.They are intersecting lines.(Consistent)
5. {(y=2x+1),(y=-2x+3):}
Both lines have different slope.They are intersecting lines.(Consistent)
6. {(-2x+5y=0),(y=(2)/(5)x):}
y=, y=
Both lines have same slope, i.e () , they are parallel.(Inconsistent)