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Basic algebra ppt

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Basic algebra ppt

  1. 1. BASIC ALGEBRA Majed AlYammahi | 12-01| Math Project | Term 1
  2. 2. Concept Explanation System of functions Moving and changing Breaking up Ratios Solve & Substitute
  3. 3. CLICK HERE FOR A BENEFICIAL VIDEO System of functions In the solution to the system below, what is the value of 2x? 3x + y = 10 x – 4y = -1 Isolate y in the first function, to find its value in terms of x. 3x + y = 10 y = 10 – 3x Then, replace this value in the other function to find the x value. x – 4(10 – 3x) = -1 x = 3, 2x =6
  4. 4. CLICK HERE FOR A BENEFICIAL VIDEO Moving and Changing If 2x - 2 = 2, x = ? Solve for x! 2x - 2 = 2 2x = 4 x=2
  5. 5. CLICK HERE FOR A BENEFICIAL VIDEO Ratios If a student has 16 boys and 8 girls, what is the ratio of boys to girls? To calculate ratio between two items, simply separate their occurrences in the most simplified form. 16 to 8 = 16:8 = 2:1or simply 2
  6. 6. CLICK HERE FOR A BENEFICIAL VIDEO Breaking Up If x3 = 12, x6 = ? Break up x6 into components that you understand. x3 ( x3 ) = 12 * 12 = 144
  7. 7. CLICK HERE FOR A BENEFICIAL VIDEO Solve & Substitute If 2x - 3 = 9, what is x2 - 4x + 2? First, solve for x: 2x - 3 = 9 2x = 12 x = 6. Next, substitute 6 for x. x2 - 4x + 2 = 62 – 4(6) + 2 = 36 - 24 + 2 = 12 + 2 = 14

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