Math Problem Statement

Given the function f(x) = 6 - 8x, find the indicated values: (a) f(-8), (b) f(0), (c) f(8).

Solution

The given function is f(x)=68xf(x) = 6 - 8x, and the problem asks to find the values of the function at specific inputs:

(a) f(8)f(-8)

We substitute x=8x = -8 into the function:

f(8)=68(8)=6+64=70f(-8) = 6 - 8(-8) = 6 + 64 = 70

(b) f(0)f(0)

We substitute x=0x = 0 into the function:

f(0)=68(0)=6f(0) = 6 - 8(0) = 6

(c) f(8)f(8)

We substitute x=8x = 8 into the function:

f(8)=68(8)=664=58f(8) = 6 - 8(8) = 6 - 64 = -58

Therefore, the values are:

  • (a) f(8)=70f(-8) = 70
  • (b) f(0)=6f(0) = 6
  • (c) f(8)=58f(8) = -58

Would you like further explanation or additional details? Here are five related questions to expand on this:

  1. How do you graph linear functions like f(x)=68xf(x) = 6 - 8x?
  2. What does the slope of 8-8 in f(x)=68xf(x) = 6 - 8x represent?
  3. How do we find the x-intercept and y-intercept of f(x)=68xf(x) = 6 - 8x?
  4. What happens to the function f(x)f(x) as xx \to \infty or xx \to -\infty?
  5. How would the graph of f(x)=68xf(x) = 6 - 8x compare to g(x)=6+8xg(x) = 6 + 8x?

Tip: When working with linear functions, the slope mm determines how steep the line is and in which direction it slants.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Functions

Formulas

f(x) = 6 - 8x

Theorems

-

Suitable Grade Level

Grades 7-9