Question

How do you solve `y=1/2x+4` and `y=-4x-5` using substitution?

Answer 1

`x =-2`
`y=3`

Explanation:

`y=x/2+4 and y=-4x-5`
so
`x/2+4=-4x-5`
or
`4x+x/2=-5-4`
or
`9x/2=-9`
or
`x =-2`
Substituting the value of x in the equation `y=x/2+4`
we get
`y=-(2)/2+4` =`3`