Video narration
You're looking for a square on a board-game grid: you move across, then up, until you find the spot. A graph gives you a similar way to find a point. The horizontal axis runs across, and the vertical axis runs up. Each dot marks two values together: one tells you where to go across, and the other tells you how far up. So a dot isn't decoration. It's a pair. When the dots show values in order, a line connecting suitable points can help your eye follow how one value changes as the other changes. Look at the path, not just the dots: does it rise, fall, or stay level? That makes a pattern easier to notice. But don't expect a line on every graph. Some graphs use points without connecting them. Remember: the points hold the values; a line can help show their change.