Question

Find r^-1 (x)
r(x) = 2/3 (4x -5)
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Answer 1

Explanation:

Let r(y)=x.

`x=(2)/(3)(4y-5)\\\\\frac{3}[2}x=4y-5\\\\(3)/(2)x+5=4y\\\\y=(3)/(8)x+(5)/(4)\\\\r^(-1)(x)=(3)/(8)x+(5)/(4)`