Question

How do solve the following linear system?: `y=-6x-9 , -x+3y=-5`?

Answer 1

Use substitution method

Explanation:

Given linear equations:
`y=-6x-9 \ldots(1)` &
`-x+3y=-5\ldots (2)`
substituting the value of `y` from (1) into (2), we get
`-x+3(-6x-9)=-5`
`-19x=22`
`\implies x=-\frac{22}{19}`
`y=-6x-9=-6(-\frac{22}{19})-9=-\frac{39}{19}`