Math Problem Statement
The y-intercept of the graph of the function y = f(x), whose domain is all real numbers, is f(0).
Solution
The statement in the image reads: "The y-intercept of the graph of the function , whose domain is all real numbers, is ."
This statement is true.
Explanation:
The y-intercept of a function is the point where the graph crosses the y-axis. This occurs when . Thus, the y-coordinate of the y-intercept is given by evaluating the function at , which is . So, if the domain of the function includes , the y-intercept is indeed .
Would you like any further clarification?
Related Questions:
- What happens if the domain of does not include ?
- How do you find the x-intercepts of a function?
- Can a function have more than one y-intercept?
- What is the y-intercept for linear functions like ?
- How can you determine intercepts for more complex functions (e.g., polynomials, rational functions)?
Tip:
Always check whether a function’s domain includes before assuming that the y-intercept is .
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Math Problem Analysis
Mathematical Concepts
Functions
Graphing
Algebra
Formulas
y = f(x)
y-intercept occurs at f(0)
Theorems
Basic graphing principle: y-intercept is where x = 0
Suitable Grade Level
Grades 8-10