public void testGetConst()
{
Line test = new Line(new Point(10, 10), new Point(15, 20));
Assert.AreEqual(-10, test.getConstant(), "the constant is correct");
}
public void testGetSlope()
{
Line test = new Line(new Point(10, 10), new Point(15, 20));
Assert.AreEqual(2, test.getSlope(), "the slope is correct");
}