Any assistance in creating a graph?

Long and short, i am trying to create a multi-line graph with data points. I can't figure out how to do it. I've got the graph created, but when i select my data(for just one selection) it gives me a jagged wave pattern, not a line. Ideally, i would like to be able to continually input data into the graph as i generate more and more data (it's an ongoing project and i need to have this portion of my data graphically reflected as well) but i can't even figure out one set, let alone one workbooks worth, and then data from previous and future workbooks. I have attached the workbook i am presently working on, the poorly-attempted graph is on Sheet 1, and the data i need to get plotted is Percent Passing from the 19.0-3/4 down to 200. This would also be my x-axis, with 100% down on the y-axis. PLEASE HELP!