Lesson 28 Practice

  1. Coordinates. (4,0) (3,4) (2,9)
  2. Does it have an inverse? a) has inverse b) no inverse c) has inverse d) no inverse
  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. 

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

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

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

    4 x

  7. Are They Inverses? a) yes, (f\circ g)(x)=x=(g\circ f)(x) b) no, f(g(x))=\sqrt{6x-x^2}
  8. Find the Inverses. a) x^2-3 b) noinverse c) \sqrt[3]{9-x} d) \sqrt{\frac{1}{x}}