I made a force diagram into a matrix. How can I have find a value in y for a number in x? I know for 0.1 for example the force becomes 500, or for 0.3 it becomes -500 How do I know how much it will be for .1234
p = ( {
{0, 0},
{.2, 1000},
{.4, 0},
{.6, -1000},
{.8, 0}
} );
ListLinePlot[p]