Math Problem Statement
Find the x- and y-intercepts for the function.
f(x) =
x + 5
x2 + 4
x-intercept
(x, y) =
y-intercept
(x, y) =
Solution
To find the x- and y-intercepts of the function:
1. x-intercept:
The x-intercept occurs when , or equivalently, when . This means we set the numerator equal to zero and solve for x.
So, the x-intercept is:
2. y-intercept:
The y-intercept occurs when . Substituting into the function:
So, the y-intercept is:
Summary:
- x-intercept:
- y-intercept:
Would you like more details or have any further questions?
Here are 5 related questions:
- How do you find intercepts for more complex functions?
- Can a function have more than one x-intercept or y-intercept?
- What happens if the numerator has no real solutions for the x-intercept?
- How do you interpret intercepts graphically?
- What if the denominator equals zero at a certain point?
Tip: Always check if the denominator is zero to avoid undefined values in rational functions!
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Math Problem Analysis
Mathematical Concepts
Rational Functions
Intercepts
Algebra
Formulas
x-intercept: Set the numerator of the function equal to zero and solve for x.
y-intercept: Substitute x = 0 into the function.
Theorems
A rational function's x-intercepts occur where the numerator is zero, provided the denominator is not zero.
A rational function's y-intercept occurs where x = 0, provided the function is defined at x = 0.
Suitable Grade Level
Grades 9-11
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