Quadratic and cubic graphs

What you'll learn

1. 1

   Imagine you throw a ball in the air. The path it makes is a curve called a quadratic graph — like an upside-down smile! 🏀

2. 2

   What shape does a quadratic graph make?

3. 3

   Let's plot y = x² together. We'll pick x values and work out y.

4. 4

   Now try y = x² + 1. Move the points to match the curve.

5. 5

   Now imagine a cubic graph — it makes an S-shaped curve that goes up and down. The equation has an x³ term, like y = x³.

6. 6

   Let's plot y = x³ together.

7. 7

   Which of these is a cubic graph equation?

8. 8

   For y = x³, what is y when x = -1?