Slove the question

Let - [] and = 2 Compute the area of the parallelogram determined by four points with position vectors , v, + v, 7. Compute the determinant of the 2 x 2 matrix [, ]. How do they compare? Replace the first entry of by an arbitrary number I, and repeat the problem. Draw a picture of both parallelograms and explain geometrically what happens to the area of the parallelogram when the first coordinate of is changed to x