Line graph from multiple parameters

How can I make a Line Chart visualization from user-input parameters?  I've got four parameters that would correspond with two pairs of coordinate (x,y) values for the chart.  Ideally I want a user to be able to adjust the parameter sliders and see the resulting line on the chart.  

If I'm understanding correctly, this can't be done with SelectedValue in a table as it just gets the parameters' default values, not the current or selected value.  Is there a way to do this with measures, or some other route?  

Here's basically what I want it to look like: