Consider the following planes. 5x + 2y + z = -1 and 2xy + 6z = 9 Use these equations for form a system. Reduce the corresponding augmented matrix to row echelon form. (Order the columns from x to z.) 1 2/5 1/5 -1/5 - - 0 1 -28/9 -47/9 ↓ ↑ Identify the free variables from the row reduced matrix. (Select all that apply.) Z Use back substitution to write the variables corresponding to the leading variables in terms of the free variables. State the resulting solution. 17 -17/5 X 9 26/9 47 + t 9 1 0 What does this solution represent? ○ The skew line of the given planes. O The line of intersection of the given planes. O The plane perpendicular to the given planes. O The two lines of intersection of the given planes. O The single point of intersection of the given planes.