Math Problem Statement

The function f(x) = 2^{-x+5} + 4 is graphed below. Plot all lattice points of the inverse. Use the labeled points as your guide.

Solution

To plot the lattice points of the inverse, let's find the coordinates of the points on the original function f(x)=2x+5+4f(x) = 2^{-x+5} + 4, then switch each (x,y)(x, y) pair to (y,x)(y, x) for the inverse.

The function f(x)f(x) has these visible lattice points:

  1. (1,9)(1, 9)
  2. (2,8)(2, 8)
  3. (3,6)(3, 6)
  4. (5,4)(5, 4)

For the inverse, swap the xx and yy values in each coordinate:

  1. (9,1)(9, 1)
  2. (8,2)(8, 2)
  3. (6,3)(6, 3)
  4. (4,5)(4, 5)

These are the lattice points you should plot for the inverse function. Place these points on the graph at:

  • (9,1)(9, 1)
  • (8,2)(8, 2)
  • (6,3)(6, 3)
  • (4,5)(4, 5)

Would you like further details on the inverse function or additional assistance?


Related Questions:

  1. How do you find the inverse of an exponential function?
  2. What is the process to determine lattice points on a function graph?
  3. Why do we swap xx and yy values when finding the inverse points?
  4. What transformations affect the graph of an exponential function like f(x)=2x+5+4f(x) = 2^{-x+5} + 4?
  5. How would the inverse function graph differ if there was a horizontal shift in f(x)f(x)?

Tip: When plotting an inverse, always check for symmetry along the line y=xy = x.

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Math Problem Analysis

Mathematical Concepts

Inverse functions
Exponential functions
Graphing

Formulas

Inverse function coordinates (x, y) -> (y, x)

Theorems

Inverse function property

Suitable Grade Level

Grades 10-12