Curve sketching (quadratic)
Vertex, axis, intercepts, concavity.
Calculator
How to use
Sketch
Combine with plotter for picture.
Educational use only. For assessments, show reasoning and check boundary cases.
Vertex, axis, intercepts, concavity.
Combine with plotter for picture.
Educational use only. For assessments, show reasoning and check boundary cases.
Model / formula
y = ax² + bx + c sketch data
Result
Vertex (0.000000, -4.000000) Discriminant D = 16.000000 x-intercepts ≈ -2.000000, 2.000000 y-intercept: (0, -4.000000) Opens upward