Which function has the narrowest graph 1. f(x) = 1/3 x^2
2. g(x) = -2x^2
3. h(x) = x^2
4. j(x) = 1/5x^2

What is the vertex form of f(x) = x2 + 6x + 3

Plz heeeeeeelp plz give me the answer

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab