\fExample. Use DRISA to graph xy - 3x = y + 1 Solution: Domain Range Solve for y interms of x Solve for x interms of y y( x - 1) = 3x + 1 x(y - 3) = y+1 y = 3x + 1 x= y+1_ x - 1 y - 3 Domain: x # 1 Range: y # 3 17 Intercepts a) x - intercept (x, 0) b) y - intercept (0, y) let y = 0 let x = 0 x(0) - 3x =0+ 1 O(y) - 3(0) = y + 1 X =- 1/3 y =-1 Symmetry a) Symmetry with respect to x-axis. xy - 3x = y+1 x(-y) - 3x =-y+1 -xy - 3x =-y+1 Equation is changed. Therefore not symmetric with respect to x-axis. b) Symmetry with respect to y-axis. xy - 3x = y+ 1 (-x)y- 3(-x) =y+1 -xy + 3x = y+1 Equation is changed. Therefore not symmetric with respect to y-axis. c) Symmetry with respect to origin. xy - 3x = y+1 (-x) (-y)- 3(-x) =-y+1 xy + 3x =-y+1 Equation is changed. Therefore not symmetric with respect to origin.