75. Find the equation of the line through points (2, 3) and (7,-2). 76. Graph y x+ 6x +1. Then state the domain and range. 77. Simplify (a 78. Simplify V32a bwithout using decimals. 79. Solve for x: V3x-4 2 80. If fx) x-4 andg()V2x + 4, find: a) f(g(0) b) g(f(0))