Question

What is the value of the x determinant (Dx) in the system?

3x – 7y = 11
2x + 5y = –4

Answer 1

multiply equation one by 2 and equation two by 3 and subtract equation two from one .
solve for y,
substitute that value of y to obtain values of x

Answer 2

\[ax + by = k_1\]
\[cx+ dy = k_2\]

\[determinant = ad -bc\]

Answer 3

D(x) is being asked for

Answer 4

so it makes sense to obtain eigen values : )

Answer 5

solve for either a row or column vector

Answer 6

det x = 27 / 29. Test it and see. also you will find det y = -34 / 29.

Answer 7

sorry, misread another question. i think im getting tired