Question

Y=1/3x - 4
y=-7/3x +4 in substitution

Answer 1

we are given

`y=(1)/(3) x-4`...........(1)

`y=-(7)/(3) x+4`...........(2)

we can plug second equation into first one

`-(7)/(3) x+4=(1)/(3) x-4`

now, we can solve for x

`(7)/(3) x+(1)/(3) x=4+4`

`(8)/(3) x=8`

`x=8*(3)/(8)`

`x=3`

now, we can find y

`y=(1)/(3) *3-4`

`y=-3`

so, we will get solution as

`(x,y)=(3,-3)`.............Answer