fe979cea-4-c-1-determine-the-parabolas-concavity-and-compute-the-vertex-coordina

Question

Given the quadratic regression output a = -0.5, b = 4, c = 1, determine the parabola's concavity and compute the vertex coordinates (x_v, y_v).

Accepted Answer

Concave down; vertex at (4, 9).

Answer

Concave up; vertex at (4, -9).

Answer

Concave down; vertex at (2, 1).

Answer

Concave up; vertex at (-4, 9).