Well, it's actually pretty straightforward: slope intercept form is just a way of writing an equation that describes a linear relationship between two variables. Think of it like a recipe for a straight line - you need to know the slope (like, how steep the line is) and the y-intercept (like, where the line crosses the y-axis).
So, when you're looking at a graph, you're trying to figure out the slope and the y-intercept so you can write the equation in slope intercept form. It's kind of like trying to solve a mystery - you've got to look for clues and piece together the evidence to get to the answer.