Justify that every line of the family lies in $E$, and determine the value $k$ for which the point $C$ lies on $g _ { k }$. (for verification: $k = 0.8$ )
Justify that every line of the family lies in $E$, and determine the value $k$ for which the point $C$ lies on $g _ { k }$.\\
(for verification: $k = 0.8$ )