Vertices B, C, O and Y form a quadrilateral. X is a point such that BX : XO = 1 : 2.
−−→
C
B
=
3
a
−−→
C
O
=
3
b
−−→
O
Y
=
4
a
−
b
Express the vector
−−→
C
X
in terms of
a
and/or
b
.
Explain if
−−→
C
X
is parallel to
−−→
C
Y
in the comment box giving a reason for your answer.