y=2x+4 --> x=2y+4 ==> y=(x-4)/2
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So y = (3x - 4)/2. To find the find the inverse equation, y-1,(1) Rewrite the equation replacing all ys with xs and all xs with ys.x = (3y - 4)/2(2) Solve the new equation for yx = (3y - 4)/22x = 3y - 42x + 4 = 3y(2x + 4)/3 = yThis is your inverse equation!y-1 = (2x + 4)/3
(3x+1)(2x+4) = 6x2+4+2x+12x = 6x2+14x+4
2x+4 = -16 2x = -16-4 2x = -20 x = -10
2x + 4 = 10 2x = 10 - 4 = 6 2x = 6 x = 6/2 = 3
2x + 4 = 16 2x = 16 - 4 2x = 12 x = 12/2 x = 6