Question

What is the solution to the system of equations below ?
y=-3x-9 and y=1/3x-39

Answer 1

9,-36

Explanation:

Answer 2

Solution is (9,-36)

Explanation:

we are given system of equation as

`y=-3x-9`

`y=(1)/(3)x-39`

Since, we have to solve for x

so, we can set them equal and then we can solve for x

`-3x-9=(1)/(3)x-39`

Add both sides by 9

`-3x-9+9=(1)/(3)x-39+9`

`-3x=(1)/(3)x-30`

`-3x-(1)/(3)x=(1)/(3)x-30-(1)/(3)x`

`-(10)/(3)x=-30`

`x=9`

now, we can find y

`y=-3* 9-9`

`y=-27-9`

`y=-36`

So,

Solution is (9,-36)