How are those vectors linearly independent?

I presume we can call a set of vectors a basis if it spans some subspace and are linearly independent. Is this matrix $$ begin{bmatrix}
1 & 8 & 0 & 5 \
0 & 11 & -3 & 5\
end{bmatrix}$$ of linearly independent vectors ? Because in mine textbook it is. I’m very confused.
Can it ever be called a basis?