To find the highest and lowest points on a graph, you can follow these steps:

1. Look for turning points: These are spots where the curve switches direction.

   • A maximum point is like a peak—it's higher than the points next to it.
   • A minimum point is like a valley—it's lower than the points around it.

2. Use the first derivative test: If you know a bit about calculus, you can check where the derivative changes.

   • If it goes from positive to negative, that's a maximum point.
   • If it goes from negative to positive, that's a minimum point.

3. Check the endpoints: Sometimes, the highest or lowest point is at the very ends of your graph.

That’s it! Pretty simple, right? Happy graphing!