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6-2 Solving Systems Using Substitution

6-2 Solving Systems Using Substitution . Objective: Ditto “ “. 6-2 Solving Systems Using Substitution . You can solve linear systems by solving one of the equations for one of the variables. Then substitute the expression for the variable in the other equation.

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6-2 Solving Systems Using Substitution

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  1. 6-2 Solving Systems Using Substitution Objective: Ditto “ “

  2. 6-2 Solving Systems Using Substitution • You can solve linear systems by solving one of the equations for one of the variables. • Then substitute the expression for the variable in the other equation.

  3. 6-2 Solving Systems Using Substitution The weather out side is frightful

  4. 6-2 Solving Systems Using Substitution • Example 1: Use substitution to solve • y = 3x • x + y = -32 Choose wisely . . .

  5. 6-2 Solving Systems Using Substitution But My Dear we’re still goodbying

  6. Choose wisely . . . 6-2 Solving Systems Using Substitution • Example 2: Use substitution to solve • 3y + 4x = 14 • -2x + y = -3

  7. 6-2 Solving Systems Using Substitution As long as you love me so

  8. Choose wisely . . . 6-2 Solving Systems Using Substitution • Example 3: P. 374 • A snack bar sells two sizes of snack packs. Large is $5 & small is $3. One day the snack bar sold 60 packs for $220. How many small packs did it sell?

  9. 6-2 Solving Systems Using Substitution • Example 3: A snack bar sells two sizes of snack packs. Large is $5 & small is $3. One day the snack bar sold 60 packs for $220. How many small packs did it sell? • Write 2 equations and solve with sub.

  10. 6-2 Solving Systems Using Substitution Let it snow let it snow let it snow

  11. 6-2 Solving Systems Using Substitution • Example 4: Solve with sub. • x = -2y + 4 • 3.5x + 7y = 14

  12. 6-2 Solving Systems Using Substitution • Example 4: Solve with sub. • y = 3x – 11 • Y – 3x = -13

  13. HW: p. 375 12 – 36 every third 6-2 Solving Systems Using Substitution Let it snow let it snow let it snow

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