The window that we use to graph a function is often a concern for us when we're using the calculator. If we go to this key, the window key the standard window is from a minimum on the X axis of -10 to a maximum of 10 with marks every one unit. The same thing for the Y axis. So let's consider how this can occasionally be a concern. For example, for this function Y equals 2 X plus 30, we know it's a linear function with a Y intercept of 30. In a standard window, I will not be able to see the graph of this function. So I need to adjust the window. Let's go back to window. The X min and X max are not a concern. But with a Y max of 10, I will not be able to see the graph. So let me arrow down and change the Y max to 50. There's no perfect Y max for this. I know the intercept was 30, so 40 would have been a good Y max, or 50, or 60; any of these. I'm also going to change the scale to five because it's putting a mark every one unit for all 50 units and that would be a lot of marks. Let's graph this and see if we can see the graph. So by making an adjustment on the window, I'm now able to see the graph of the function.