Realized i've already asked this exact same question woops, mods delete please. Sorry.
For which values ofk are there no solutions, many solutions, or a unique solution to this
system?
x− y = 1
3x − 3y = k
This is what i did
1 -1 | 1
3 -3 | k
Line 2 - (3 x line 1)
1 -1 | 1
0 0 |k-3
So k = 3 there are inifinte solutions
And when k doesnt = 3 there are no solutions
But what about one solution? Is there one?