Question

Please do your best to find the answer, It would make me really happy :)

Answer 1

Answer:

$slope \: of \: line \: = \frac{1 - ( - 7)}{ - 7 - ( - 7)} \\ = \frac{8}{0} \\ = \alpha \\ it \: means \: line \: is \: parallel \: to \: y \: axis.$