Question

Y + 7x= 11; x= -1,0, 4

Answer 1

We have an expression with 2 unknowns, and we have values for one unknown. We have to calculate then the other unknown value:

Expression:

`\begin{gathered} y+7x=11 \\ y=11-7x \end{gathered}`

Then, when x=-1

`y=11-7x=11-7(-1)=11+7=18`

When x=0

`y=11-7(0)=11`

When x=4

`y=11-7(4)=11-28=-17`