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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

Chapter Review

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Exercise 35 Page 718

Just like with fractions, we cannot divide by 0 in rational functions.

x ≠ - 4

Practice makes perfect

Consider the given rational function. y=3/x+4To identify the excluded value, we must remember that the denominator cannot be 0 because division by 0 is not defined. Let's find the value of x that would make the denominator equal to 0.

x+4=0

LHS-4=RHS-4

x = - 4

If x=- 4, the value of the denominator is 0. Therefore, the excluded value is - 4. x ≠ - 4

Subchapter links

Exercises p.715-718