Questions: 3.2 Properties of a Function's Graph
Question
Completed:
Which of the following statements is not true?
Choose the incorrect statement.
A. A function can have several y-intercepts.
B. A function can have infinitely many x-intercepts
C. Another name for an x-intercept is a real zero.
D. Every function can be represented by a graph in the Cartesian plane.
Transcript text: n 3.2 Properties of a Function's Graph
Question
Completed: $\square$
Which of the following statements is not true?
Choose the incorrect statement.
A. A function can have several $y$-intercepts.
B. A function can have infinitely many $x$-intercepts
C. Another name for an $x$-intercept is a real zero.
D. Every function can be represented by a graph in the Cartesian plane.
Solution
Solution Steps
To determine which statement is not true, we need to analyze each statement based on the properties of functions and their graphs.
A function can have only one $y$-intercept because it must pass the vertical line test.
A function can have infinitely many $x$-intercepts, for example, the sine function.
An $x$-intercept is indeed another name for a real zero.
Not every function can be represented by a graph in the Cartesian plane, for example, functions that are not well-defined for all real numbers.
Based on this analysis, statement A is not true.
Step 1: Analyze Statement A
A function can have only one \( y \)-intercept because it must pass the vertical line test. If a function had more than one \( y \)-intercept, it would not be a function.
Step 2: Analyze Statement B
A function can have infinitely many \( x \)-intercepts. For example, the sine function \( \sin(x) \) has infinitely many \( x \)-intercepts at \( x = n\pi \) where \( n \) is an integer.
Step 3: Analyze Statement C
An \( x \)-intercept is indeed another name for a real zero. This is because at the \( x \)-intercept, the function value is zero.
Step 4: Analyze Statement D
Not every function can be represented by a graph in the Cartesian plane. For example, functions that are not well-defined for all real numbers or functions that are defined in higher dimensions cannot be represented in the Cartesian plane.
Final Answer
\(\boxed{\text{A. A function can have several } y\text{-intercepts.}}\)