Question

The vector ( )f)x) = [-3, 7] ) is a subspace of ( )b)H) ) with a basis ( )f)b) = )[1, -4], [-2, 7]) ). Find the ( )f)b) )-coordinate vector of ( )f)x) ).
a) ([-2, 5])
b) ([-1, 2])
c) ([1, -2])
d) ([3, -7])