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3x+7/x-2 find a rule for f^-1. im pretty sure you just have to find the inverse but im not sure how to do that. please help! thankss,.

find an equation for the parabola having vertex (2, -5) and passing through the point (4,7). Express your answer in the vertex form for a quadratic function. i know the vertex form is y=a(x-h)^2 + k and (h,k) is the vertex. but i dont know where to go from there. please help! thanks:)

describe how the graph of g(x)= (3x+2)/(x-4) can be obtained from the graph of y= 1/x. specify the order of the transformations. any help would be greatly appreciated! thankss:) i can't use a calculator. i just want to know how to do it. i already have the answer. it is a transformation. i know...