Math Problem Statement
Solution
Let's analyze the given functions and statements:
-
Function A:
This is a linear function. Linear functions do not have maxima or minima, since they extend infinitely in both directions. -
Function B:
Expanding this function:
This is a quadratic function with a parabola opening upwards (since the coefficient of is positive). Therefore, it has a minimum point. -
Graph C:
The graph in C is a parabola opening downwards, indicating that it has a maximum point.
Now, let's evaluate the statements:
-
C has a maximum and A has a minimum.
This is false because A (linear function) does not have a minimum. -
B has a minimum and C has a maximum.
This is true because B (quadratic) has a minimum and C has a maximum. -
B and C have the same zeros.
To check the zeros of B, we solve:
For C, looking at the graph, the zeros seem different from B's. So, this statement is false. -
A and B have the same y-intercept.
The y-intercept of is at .
The y-intercept of is at .
They are different, so this statement is false.
The correct statement is:
"B has a minimum and C has a maximum."
Do you want a deeper explanation or have further questions?
Related Questions:
- How do you find the vertex of a quadratic function?
- What is the general method to find the zeros of a polynomial?
- How do you determine if a parabola opens upwards or downwards?
- What are the characteristics of linear functions compared to quadratic functions?
- How do you identify the y-intercept of a function graphically and algebraically?
Tip: Always check the direction of the parabola to determine if it has a maximum or minimum point.
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Math Problem Analysis
Mathematical Concepts
Linear Functions
Quadratic Functions
Maxima and Minima
Zeros of Functions
Formulas
Linear function formula: y = mx + b
Quadratic function expansion: (x + a)(x + b) = x^2 + (a + b)x + ab
Theorems
Maxima and minima of quadratic functions
Zero-product property for solving quadratic equations
Suitable Grade Level
Grades 9-12
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