Quadratic: y=ax^2 +bx + c (Junior Cert Mathematics): Flashcards

A function that includes $x^2$

U-shaped curve

Parabola

$f(x) = x^2$

$x^2$ causes values to increase rapidly as $x$ gets larger

Symmetrical curve

Axis of symmetry

Vertex

Upside-down parabola

Happy face (positive $x^2$ coefficient)

Sad face (negative $x^2$ coefficient)

$y$-axis