26 HW Pg' 103 107

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2-6 HW Pg. 103- 107 20-68 eoe, 70-74, 94-112 e
Quiz 2 2-18 study
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2-6 HW Continued
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Quiz 2 2-18 2.) -63 3.) -21 4.)
14 5.)-2800 6.) -3 7.) 10.8 8.) 110 9.)
270 10.) 7.1t 11.) -13x 12.) 13.) 14.)
-43x 15.)2y 16.)-8t 17.) -243b 18.) 20y10

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• Wir2.5
• LESSON

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2-7 Division of Real Numbers

• Reciprocal the flip of a fraction or whole
  number so that the product of a number and its
  reciprocal is 1.
• - called Inverse Property of Multiplication
• - the reciprocal of a is when
• - the reciprocal of
• Division Rule to divide (find the quotient) a
  number a by a nonzero number b, multiply a by the
  reciprocal of b
• -

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Another way to look at division of fractions

• Try to make the denominator a WHOLE .
• Whatever you do to the DENOMINATOR you MUST do to
  the NUMERATOR.

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• Sign of a quotient
• Same signs (-)/(-) or ()/()
• take quotient of absolute values
• answer is POSITIVE
• Different signs (-)/() - or ()/(-)
  -
• take quotient of absolute values
• answer is NEGATIVE

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Practice

• Find the quotient.

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Practice 2

• Simplify the expression

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Practice 3

• Evaluate the expression

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When will I ever use this?
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Summary

• The product of a number and ___ is 1.
• Ans reciprocal
• Is dividing by a number the same as multiplying
  by the opposite of the number? EXPLAIN your
  reasoning.
• Ans No, dividing is the same as multiplying by
  the reciprocal
• Is the reciprocal of a negative number sometimes,
  always or never positive?
• Ans never
• Describe the error shown below

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Check Yourself

• Pg. 111-113 16-60 eoe, 76-100 eoe
• 16-30 like practice 1 where you find the
  quotient
• 32-50 like practice 2 where you simplify the
  expression as far as possible
• 52-56 like practice 3 where you evaluate the
  expression by substituting the value for the
  variable then simplifying
• 5860 find the domain of the function, so what
  can you put in for x so the expression makes
  sense
• 76-100 mixed review