Solve each system by graphing. 1) y= - -x - 1 2) y = - _x-9 V = -. 10 EX+7 yellx + 4 6 3) x - 2y =6 4) 5x - y = -8 x + 2y = -18 x- y=-4 Solve each system by elimination. 5) -4x - 4y =-8 -7x - 12y =6 6) 20x - 8y = 16 -10x + 5y = -10 7) -6x - 7y =7 5x + 2y= -2 8) -3x - 5y = -20 2x + 2y =4 Solve each system by substitution. 9) -8x + 2y = -22 10) 7x+ y=-23 y = -3x + 17 -3x + 4y =1 11) -x - 2y = -8 x + 3y = 11 Solve each system by elimination. 12) -x - 4y - 2 = 3 13) 4x + 2y+2= -17 4x + 3y + 2z =23 3x + 2z =-14 5x - 6y + 2 =4 x+ y - 2z =-2Solve each system by elimination questions 13 and 14. 14) -x - 5y -5z = 3 15) 4x - 4y - 2z = 26 -3x - y+ z =13 2x - 5y - z = 25 -5x - 2y + 3z =25 -x+ 6y -2z = -24 Use the information provided to write the standard form equation of each circle. 16) Center: (-2, -13) Radius: 3 17) Center: - -6) Radius: 2 Use the information provided to write the general conic form equation of each circle. 18) Center: (-4, -9) 19) Center: (11, -5) Radius: 5 Radius: 4 Use the information provided to write the standard form equation of each circle. 20) Ends of a diameter: (-4, -11) and (-4, 17) 21) Ends of a diameter: (6, 1) and (-12, -1) 22) x2 + 12 - 22x + 16y + 149 = 0 23) x2 + 12 + 4x + 4y- 1=0 Use the information provided to write the general conic form equation of each circle. 24) Center: (16, 12) Point on Circle: (15, 10) 25) Center: (-16, -3) Point on Circle: (-18, -2)