9:28 P & F If x^2 + 2xy + y^2 = y^2 then what is dy/dx ? O ( x + y) / (y- x) O 2x + 2y O ( x + 1) / y O - x (Show solution) Derive y = (x + 5) / (x^2 - 1) O (-x12 - 10x - 1 ) / (x12 - 1) 12 O (x12 - 10x+1 ) / (x12 - 1) 12 O (-x12 +10x - 1 ) / (x12 + 1) 12 O (x12+10x - 1 ) / (x12 + 1) 12 The derivative of a function is identified to the of the graph of the function. Secant Slope Normal O Tangent