Last updated on Nov 05, 2026

Types of Graphs (Junior Cert Mathematics): Quizzes

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Quadratic: y=ax^2 +bx + c

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What makes a function quadratic?

It includes an $x^2$ term

What is the U-shaped curve of a quadratic function called?

A parabola

What is the simplest quadratic function?

$f(x) = x^2$

For $f(x) = x^2$ , what is $f(2)$ ?

$4$

What property describes how a parabola looks the same on both sides?

Symmetry

What is the vertical line that divides a parabola symmetrically called?

Axis of symmetry

What is the lowest point on an upward-opening parabola called?

Vertex

What happens if the coefficient of $x^2$ is negative?

Parabola opens downwards

Which function creates an upside-down parabola?

$f(x) = -3x^2 + 4$

For $f(x) = x^2$ , what is the axis of symmetry?

The $y$ -axis

If a parabola looks like a sad face, what is the coefficient of $x^2$ ?

Negative

Why does $f(x) = x^2$ form a curve rather than a straight line?

The $x^2$ term causes rapid increase

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