Precalculus Examples

Find the x and y Intercepts
To find the x-intercept, substitute in for and solve for .
Solve the equation.
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Rewrite the equation as .
Add to both sides of the equation.
Take the root of both sides of the to eliminate the exponent on the left side.
The complete solution is the result of both the positive and negative portions of the solution.
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First, use the positive value of the to find the first solution.
Next, use the negative value of the to find the second solution.
The complete solution is the result of both the positive and negative portions of the solution.
To find the y-intercept, substitute in for and solve for .
Simplify .
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Raising to any positive power yields .
Subtract from .
These are the and intercepts of the equation .
x-intercept:
y-intercept:
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