- A ball thrown upwards in still air follows an approximate parabolic arc.

- The curve y=-4x

- The curve y=4x

- The second degree (or quadratic) relation y=ax

which form a parabolic shape that passes through the point (0,b).

When 'a' is positive, the parabola opens upwards. When 'a' is negative, the parabola opens downwards.

Increasing the size of 'a', narrows the width of the mouth of the parabola.

When 'a' is zero, the parabola y=ax

- Your Score Report appears after you have made 8 choices.

- Your Game Score is reduced by the number of fish hits.

- To slow the game speed repeat tap/click on the word

- To increase the game speed repeat tap/click on the word Math.

- Speed can also be adjusted with a keyboard's - and + keys.

- Refresh/Reload the web page to restart the game.

- Adjust the sound level of media on your device.

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