Question Number 97929 by bobhans last updated on 10/Jun/20
$$\mathrm{Find}\:\mathrm{equation}\:\mathrm{of}\:\mathrm{line}\:\mathrm{through}\:\mathrm{A}\left(\mathrm{1},\mathrm{2},\mathrm{3}\right) \\ $$$$\mathrm{and}\:\mathrm{parallel}\:\mathrm{to}\:\mathrm{y}\:\mathrm{axis}\:?\: \\ $$
Commented by mr W last updated on 10/Jun/20
$$\frac{{x}−\mathrm{1}}{\mathrm{0}}=\frac{{y}−\mathrm{2}}{\mathrm{1}}=\frac{{z}−\mathrm{3}}{\mathrm{0}} \\ $$$${or} \\ $$$${x}=\mathrm{1} \\ $$$${y}={t} \\ $$$${z}=\mathrm{3} \\ $$