The vector 12𝐢 + 𝑞𝐣 is parallel to the vector 9𝐢 − 𝐣. Find the value of the constant 𝑞

\(\text{in two dimensions the ratio of the x and y coordinates}\\ \text{of parallel vectors will be equal}\\ \dfrac{q}{12} = \dfrac{-1}{9}\\ 9q = -12\\ q = -\dfrac 4 3 \)