I am trying to make a line graph using Microsoft Excel. I have X values and Y values for points along a graph of y=(-3/5)X +30. Is there a way that I can plot the equation on Excel? If it would be easier could I graph the data points (make a line that fits through the data points?). The coordinates are (0,30) (10,24) (20, 18) (30, 12) (40, 6) and (50,0) whenever I try to make a graph, Excel makes two lines, one for the Y plots and one for the X plots. Please Help!!!