consistient means they have countable number of solutions (example, a point, not a line since lines are infinite)
inconsitient means they have no solutions (no points of intersection)
dependent means that they have infinite solutions (most likely becasue they are the same equaiton)
6x-2y=10
9x-3y=9
divide first equation by 2
3x-y=5
multipliy by -3
-9x+3y=15
add to second equation
-9x+3y=15
9x-3y=8 +
0x+0y=23
0=23
fales
therfor it is inconsistient