Presentation on theme: "Words Into Symbols Objective: To translate word phrases into algebraic expressions and word sentences into equations by Gavin McGerald."— Presentation transcript:
1 Words Into SymbolsObjective: To translate word phrases into algebraic expressions and word sentences into equationsby Gavin McGerald
2 Expressions examples A number decreased by 3 A number increased by 7 4 more than the square of a numberThe difference of twice a number and 5Twice the sum of a number and 5X – 3n + 7b2 + 42n – 52(x + 5)by Gavin McGerald
3 In a word problemA train leaves town A going east at 70m mph toward town B, another train from town A left an hour later at 60 mph going west. What is the distance between the two trains after x hours?D = rt60(x-1) 70x60(x-1) + 70x = 60x – x = 130x - 60TownAby Gavin McGerald
4 Consecutive NumbersThe sum of 4 consecutive odd integers is 64 find each integerFirst number is x, next number must be x + 2 the third x + 4 and so on.x + (x + 2) + (x + 4) + (x + 6) = 644x + 12 = 644x = 52x = 1313, 15, 17, 19by Gavin McGerald
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