answer this q step by step
Kindly refer the similar link for your query.
https://www.meritnation.com/ask-answer/question/draw-the-graph-of-two-lines-x-3-and-y-1-and-find-the-relat/linear-equations-in-two-variables/10132993
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https://www.meritnation.com/ask-answer/question/draw-the-graph-of-two-lines-x-3-and-y-1-and-find-the-relat/linear-equations-in-two-variables/10132993
Regards