Question

Solve the system of equations using the substitution method. -x − 2y = 0 y = -8x (x, y) = ( , )

Answer 1

`= { \tt{(0, \: 0)}}`

Explanation:

Let:

`{ \bf{ - x - 2y = 0 - - - (a)}} \\ { \bf{y = - 8x - - - (b)}}`

Substitute for y in equation (b) to equation (a):

`{ \tt{ - x - 2( - 8x) = 0}} \\ { \tt{ - x + 16x = 0 }} \\ { \tt{x = 0}}`

Also, y = 0