Question

3. x + y = 16
y = -x + 1

Answer 1

`False`

Explanation:

`\begin{bmatrix}x+y=16\\ y=-x+1\end{bmatrix}`

`\mathrm{Substitute\:}:y=-x+1`

`\begin{bmatrix}x-x+1=16\end{bmatrix}`

`x-x=0`

`0+1=1`

`1=16`

`\mathrm\:{1\:does\:not\:16`

`\mathrm\:{So\:this\:equation\:is\:false}`