Question

Solve the system of equations using substitution.

Answer 1

(
`(1)/(3)`, 3 )

Explanation:

Given the 2 equations

y = 9x → (1)

6x - y = - 1 → (2)

Substitute y = 9x into (2)

6x - 9x = - 1, that is

- 3x = - 1 ( divide both sides by - 3 )

x =
`(1)/(3)`

Substitute x =
`(1)/(3)` into (1) for corresponding value of y

y = 9 ×
`(1)/(3)` = 3

Solution is (
`(1)/(3)`, 3 )