Lesson 28 Practice

  1. Coordinates. (4,0) ____ (3,4) ____ (2,9)
  2. Does it have an inverse? a) has b) no c) has d) no
  3. Inverses 1. a) x b) x
  4. Inverses 2. a) 3x b) x-3 c) \frac{1}{3}x d) x+3
  5. Show They're Inverses Part 1. a) 2(x-3)

    b) 2(x-3)

    2(x-3)

  6. Show They're Inverses Part 2.

    2(\frac{x}{2}+3-3) ___ 1

    2(\frac{x}{2}-0) ______ 2

    2(\frac{x}{2}) _________ 3

    x ____________ 4

  7. Are They Inverses? a) yes___Why?___(f\circ g)(x)=x=(g\circ f)(x) b) no___Why?___f(g(x))=\sqrt{6x-x^2}
  8. Find the Inverses. a) x^2-3 h) noinverse c) \sqrt[3]{9-x} d) \sqrt{\frac{1}{x}}