Each linear system has infinitely many solutions. Use parametric equations to describe its solution set. a) x1 + 3x2 − x3 = −4 3x1 + 9x2 − 3x3 = −12 −x1 − 3x2 + x3 = 4 b) 6x1 + 2x2 = −8 3x1 + x2 = −4

The length of a rectangular field is 5 meters longer than its width. The area of the field is 176 square meters. Which equation will determine the dimensions of the field? x2 +5x+176 = 0 æ +5x = 176 x² + 5 = 176 2x+5 176 =

solve the system 4b