Deep Learning 01: Non linear relationship vs linear relationship

 A linear relationship is like this:

Every time you take one step forward, you go up by the same amount.

Example:
If you earn ₹10 for every hour you work — double the hours → double the pay.
That’s linear. The graph looks like a straight line.

Now, a non-linear relationship means:

Each extra step doesn’t increase (or decrease) the same way as before.

Example 1️⃣:
You start a business — first few customers give you small profit,
but later customers bring much more (due to reputation or network effects).
→ Profit doesn’t rise evenly — that’s non-linear.

Example 2️⃣:
Gravity — when you move twice as far from Earth, gravity doesn’t reduce by half;
it reduces by 1/4. That’s non-linear too.

In short:

• Linear → straight line, constant change.

• Non-linear → curved line, change rate itself changes.

Would you like me to show a small visual (graph) comparing linear vs non-linear?