Given vectors a {12; 6}, b {-1; 7} Find the coordinates of the vector x = 2b-a

To find the coordinates of the vector x, you need to substitute the data above the values of a and b instead of the designations a and b. Remember that the multiplication is done first.

Find the first point of the vector:

1) x = 2 * (- 1) – 12 = – 2 – 12 = – 14

Find the second point of the vector:

2) x = 2 * 7 – 6 = 14 – 6 = 8

Answer: coordinates of the vector x {- 14; eight }.