Math Problem Statement
g(x) = 3|x + 4| − 2. Which statement is correct? The function f (x) has the same range as g(x). The function f (x) has the same vertex as g(x). The function f (x) has the same x-intercept as g(x). The function f (x) has the same y-intercept as g(x).
Solution
Let's break down the given function and evaluate the potential comparisons to a function .
Vertex of :
- Absolute Value Function:
- The general form of an absolute value function is , where is the vertex of the function.
- In , we can rewrite the expression inside the absolute value as , which means and .
- So, the vertex of is .
X-intercept of :
To find the x-intercept, set : This gives two solutions: So, the x-intercepts of are and .
Y-intercept of :
To find the y-intercept, set : So, the y-intercept of is .
Now, let's evaluate the possible options:
-
The function has the same range as :
- The range of depends on the vertical stretch and shift. Since the vertex is , the function will have a minimum value at , and the range is . If has the same range, this could be true, but more information on is needed to confirm.
-
The function has the same vertex as :
- The vertex of is . If has the same vertex, this could be correct.
-
The function has the same x-intercept as :
- The x-intercepts of are and . More information on is needed to confirm this.
-
The function has the same y-intercept as :
- The y-intercept of is . If also has the same y-intercept, this would be true.
Conclusion:
Without more details about , we cannot definitively determine which of the options is correct. However, based on common comparisons between functions like this, the most likely correct statement is:
"The function has the same y-intercept as ", assuming that shares the y-intercept of 10 with .
Would you like more details or clarifications on any part of the solution? Here are some additional questions that could help expand understanding:
- What would the range of look like if it had a different vertical shift?
- How does the slope of change based on the coefficient of the absolute value?
- Could have the same x-intercepts as if it's a different form of function?
- How does changing the vertex affect the graph of absolute value functions?
- How would the graph of compare if it had a negative leading coefficient?
Tip: For absolute value functions, identifying the vertex and intercepts is a key step in analyzing their graphs.
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Math Problem Analysis
Mathematical Concepts
Algebra
Absolute Value Functions
Vertex
Intercepts
Formulas
g(x) = a|x - h| + k (vertex form of absolute value function)
X-intercept: Set g(x) = 0 and solve
Y-intercept: Set x = 0 and solve
Theorems
Vertex formula for absolute value functions
Intercepts in function analysis
Suitable Grade Level
Grades 9-11
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