Math Problem Statement
Use a graphing calculator to determine the x intercepts of the graph y = (x - 1)^2 - 4.
Solution
Let's analyze the problem. The equation given is:
To find the x-intercepts, we set and solve for :
- Add 4 to both sides:
- Take the square root of both sides:
- Solve for :
So, the x-intercepts are and .
The correct answer is option 2: "The graph intercepts the x-axis at 3 and -1."
Would you like further details or have any questions?
Here are 5 related questions to expand your understanding:
- How do you find the y-intercept of a quadratic equation?
- What does the vertex of the equation represent?
- How can you rewrite in standard form?
- What is the axis of symmetry for the graph of ?
- How does the graph of compare to ?
Tip: When finding x-intercepts, always set and solve for .
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Math Problem Analysis
Mathematical Concepts
Algebra
Quadratic Equations
Graphing
Formulas
(x - 1)^2 - 4 = 0
Taking square roots
Theorems
Zero-product property
Vertex form of a quadratic equation
Suitable Grade Level
Grades 8-10