Help me please and thanks

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

Which of the following is the result of expanding the series

Which rule describes the composition of transformations that maps ajkl to aj"k"l"? ro. 900 o to, -2(x, y) to, -20 ro, 900(x, y) ro, 9000 t-2. o(x,y) t-2, 00 ro, 900(x, y)