Which of the following shows a positive linear relationship? (assume values of x greater than 0) Part 2 A.y equals 79 minus 3.9 x y equals 79 minus 3.9 x B.y equals 40 plus 3.4 x y equals 40 plus 3.4 x C.y equals 40 plus StartRoot x EndRoot y equals 40 plus StartRoot x EndRoot D.y equals StartFraction 79 Over x EndFraction y equals StartFraction 79 Over x EndFraction