Question

6x-y=6 find y if x is 0.

Answer 1

Given the equation;

`6x-y=6`

If x= 0, then;

`\begin{gathered} \text{Substitute for x into the equation;} \\ 6x-y=6 \\ 6(0)-y=6 \\ 0-y=6 \\ -y=6 \\ \text{Multiply both sides by -1;} \\ -y(-1)=6(-1) \\ y=-6 \end{gathered}`

Note that, when a negative number is multiplied by a negative one, the result is positive. Hence, -y times -1 equals y.

ANSWER:

`y=-6`