In a (2, 5) shamir secret sharing scheme with modulus 19, two of the shares are (0, 11) and (1, 8). another share is (5, k), but the value of k is unreadable. find the correct value of k.

No i refuse to tell you the answer but the estimate is 10

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.