Answer:
The equation of the line is y=1x and I will show you a picture of a graph with your points and a line of that equation.
Step-by-step explanation:
The given parabola is . Compare with the standard equation of a parabola in vertex form, .
The vertex of this parabola is . Compare with the standard equation .
we see . Thus, the vertex of the given parabola is .
Answer: 19.1842