Use the point plotting calculator given in the Resources section titled "Graph Individual (x,y) Points" if you do not have a favorite point plotting calculator of your own.
Enter in the "x, y coordinate" in the x,y coordinate text box of your calculator. Use the x-y coordinate (0,0) for this example. Select the "plot point" button or equivalent graphing button on your calculator to plot the point. Examine the plot that is displayed. Look for a dot that is located where the x-axis and y-axis (the horizontal and vertical line on the graph) intersect.
Enter the x-y coordinate (5,0) in the coordinate textbox. Select the "plot point" button or equivalent graphing button on your calculator to plot the point. Examine the plot that is displayed. Find the number 5 on the x-axis in the graph to locate the point (5,0).
Enter the x-y coordinate (0,5) in the coordinate textbox. Select the "plot point" button or equivalent graphing button on your calculator to plot the point. Examine the plot that is displayed. Find the number 5 on the y-axis in the graph to locate the point (0,5).
Enter the x-y coordinate (5,5) in the coordinate textbox. Select the "plot point" button or equivalent graphing button on your calculator to plot the point. Examine the plot that is displayed. Find the number 5 on the x-axis in the graph. Place a string over the mark for the number 5 and stretch the string so that it is perpendicular to the x-axis (parallel to the y-axis). Find the number 5 on the y-axis in the graph. Place another string over the mark for the number 5 on the y-axis and stretch the string so that it is parallel to the x-axis (perpendicular to the y-axis). Observe that the point (5,5) is where the two strings intersect.