Math Problem Statement
Graph the composite function g(f(x)) where f(x) = -2x - 5 and g(x) = x - 1.
Solution
We are asked to graph the composite function , where:
Step 1: Find the composite function
To compute , we substitute into . Specifically, since , we replace in with :
Simplifying this:
Step 2: Graphing the function
The composite function is a linear function. Its slope is , and its y-intercept is .
To graph this, we follow these steps:
- Plot the y-intercept at .
- Use the slope , which indicates that for every 1 unit increase in , decreases by 2 units. From the y-intercept, move 1 unit to the right and 2 units down to find another point on the line.
- Connect these points to form a straight line.
Would you like me to generate a graph for this function?
Follow-up questions:
- How do you compute the composite of two functions in general?
- What is the significance of the slope in a linear function?
- How does the y-intercept influence the graph of a linear equation?
- What is the difference between and ?
- Can composite functions always be simplified into basic forms like linear functions?
Tip: Always substitute carefully when computing composite functions to avoid errors in simplification!
Ask a new question for Free
By Image
Drop file here or Click Here to upload
Math Problem Analysis
Mathematical Concepts
Algebra
Functions
Composite Functions
Linear Equations
Formulas
g(f(x)) = g(-2x - 5) = (-2x - 5) - 1
g(f(x)) = -2x - 6
Theorems
Composition of Functions
Suitable Grade Level
Grades 9-12