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Interpret mean to find our the meaning

Learning Objective : Use and interpret formulas to answer questions about quantities and their relationship. Interpret mean to find our the meaning. Work with your Partner plug in the x value to solve the rule. Why is it important use and interpret formulas?.

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Interpret mean to find our the meaning

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  1. Learning Objective: Use and interpret formulas to answer questions about quantities and their relationship Interpret mean to find our the meaning

  2. Work with your Partner plug in the x value to solve the rule

  3. Why is it important use and interpret formulas? We use formulas in everyday life such as carpentry, medicine and especially shopping

  4. formula- a set of symbols and variable in mathematics that expresses a rule. Example: the formula for finding the area of a rectangle is A = ℓxω A ω= 2 ℓ= 4

  5. Steps to using formulas Yonathan bought candy and gave an equal amount to his 8 cousins. He figured out how many pieces of candy each cousin would receive by using this formula Step 1 : Read the formula Step 2: Identify the operation Step 3: Plug in the values Step 4: Solve problem using formula Number of pieces per cousin (X) = Total number of pieces (Y) ÷ 8 How many pieces of candy did each cousin get if Yonathan bought 48? What if he bought 24 pieces? If each cousin got 2 pieces of candy how many total pieces did Yonathan buy? X = Y÷8 X = 48 ÷ 8 X= 6 X = Y÷ 8 X= 24 ÷ 8 X = 3 X= Y ÷ 8 2 = Y ÷ 8 2 x 8 = 16 Y = 16

  6. Steps to using formulas There are 28 students in Ms. Troy’s class. The number of boys in her class can be found using this formula Step 1 : Read the formula Step 2: Identify the operation Step 3: Plug in the values Step 4: Solve problem using formula Number of boys (B) = 28 – the number of girls (G) If there are 20 girls, how many boys are in her class? If there are 12 boys, how many girls are in her class? B = 28 - G B= 28 – 20 B = 8 B = 28- G 12= 28- G G = 28 – 12 = 16

  7. Steps to using formulas Janet sold water to raise money for a trip. This is the formula she used to figure out how much money she made Step 1 : Read the formula Step 2: Identify the operation Step 3: Plug in the values Step 4: Solve problem using formula $3 x the number of bottles of water (W) = total money she made ($) How much money did he make if he sold 5 bottles of water? If Janet made $ 30.00 how many bottles of water did she sale? 3 x W = $ 3 x 5 = $ $= 15 3 x W = $ 3 x W = 30 W = 30 ÷ 3 = 10

  8. What did we learn about today?Why is it important? • Step 1 : Read the formula • Step 2: Identify the operation • Step 3: Plug in the values • Step 4: Solve problem using formula The area of a rectangle can be found using this formula Area = Length (ℓ ) x width (ω) What is the area of a rectangle that has the a length of 5cm and a width of 3cm? If the Area is 21in² and the length is 3in what is the width? A = l x w A = 5cm x 3cm A= 15cm² A = l x W 21 in² = 3in x W = 21 ÷ 3= 7 in

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