Given that the vectors 6i + 15j and xi − 5j are parallel, the value of x is:
-2.
2.
-3.
3.
Given the vectors PQ and QR in the figure, then PR is:
-a - b.
-a + b.
a + b.
a - b.
The vector OP = i - j lies in the:
2nd quadrant.
1st quadrant.
4th quadrant.
3rd quadrant.
Given the vector OP = i + j, the direction of this vector is:
60°.
45°.
30°.
90°.
The magnitude of the vector -5i + 12j is:
7.
17.
√119.
13.
