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TODAY IN ALGEBRA 1… Warm Up: Writing expressions

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Presentation on theme: "TODAY IN ALGEBRA 1… Warm Up: Writing expressions"— Presentation transcript:

1 TODAY IN ALGEBRA 1… Warm Up: Writing expressions Learning Goal: 1.4 You will translate verbal sentences into equations or inequalities Independent Practice – NO A.T.

2 WARM UP: Turn to page 20 in your textbook
WARM UP: Turn to page 20 in your textbook. Do problems in the MIXED REVIEW, then 1-10 in the QUIZ for Lessons You have 20 minutes to complete these problems, then we will go over then as a class. 60 𝑖𝑛. 2 7 𝑐𝑚 2 3.5 𝑚 2 60 16 16 3 7 6.5

3 WARM UP: Turn to page 20 in your textbook
WARM UP: Turn to page 20 in your textbook. Do problems in the MIXED REVIEW, then 1-10 in the QUIZ for Lessons You have 20 minutes to complete these problems, then we will go over then as a class. 53 6 400 49 19 6.5 7. 𝑦−7 9. 2𝑘 8. 𝑡+5 𝑝;$35

4 = < ≤ > ≥ is equal to the same as is less than fewer than
TRANSLATING VERBAL SENTENCES INTO EQUATIONS: Copy the following table into your notebooks: SYMBOL MEANING ASSOCIATED WORDS = is equal to the same as < is less than fewer than at most, no more than is less than or equal to > is greater than more than is greater than or equal to at least, no less than

5 PRACTICE: Translate each verbal sentence into an equation or inequality.
Verbal Sentence Equation or Inequality a. The difference of twice a number k and 8 is 12 The product of 6 and a number n is at least 24 The sum of a number y and 5 is no more than 13 2𝑘−8=12 6𝑛≥24 𝑦+5≤13

6 PRACTICE: Translate each verbal sentence into an equation or inequality.
Verbal Sentence Equation or Inequality The sum of twice a number r and 3 is 11 The quotient of a number n and 2 is at most 16 A number q is at least 5 2𝑟+3=11 𝑛 2 ≤16 𝑞≥5

7 Therefore 3 IS A SOLUTION to the equation 𝟖−𝟐𝒙=𝟐!!
CHECKING FOR POSSIBLE SOLUTIONS: Check whether 3 is a solution of the equation. 8−2𝑥=2 Substitute 3 for x −2 3 =2 ??? Multiply 8−6=2 ??? Subtract =2 YES!!!! Therefore 3 IS A SOLUTION to the equation 𝟖−𝟐𝒙=𝟐!!

8 CHECKING FOR POSSIBLE SOLUTIONS PRACTICE: Check whether 3 is a solution of the equation or inequality. a 𝑥−5=6 4 3 −5=6 ? 12−5=6 ? 7≠6 No, 3 is not a solution b 𝑧+5>12 2 3 +5>12 ? 6+5>12 ? 11≯12 No, 3 is not a solution c 𝑛≤20 5+3(3)≤20 ? 5+9≤20 ? 14≤20 YES! Yes, 3 is a solution

9 HOMEWORK #4: Pg. 24: 3-8, 12-28 REMINDER: turn in your Student Acknowledgment and Agreement Form! If finished, work on other assignments: HW #1: Pg. 5: 3-12, 15-28, 34 HW #2: Pg. 10: 3-6, 11, 14, 15, 18, 22-26 HW #3: Pg. 18: 3-12, 15-21


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