eliminate the parameter to get an equation involving just x and y t 2 y 3 4t t Be careful here Check your signs y 3 4 t 2 t 2 None of these for 2 t 2 Oy y 3 4 x 2 x 2 y 3 4 x 2 x 2 y 3 4 x 2 x 2 y 3 4 t 2 t 2 y 3 4x 2 x 2