6-2 Solving Systems Using Substitution . Objective: Ditto â€œ â€œ. 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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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.

6-2 Solving Systems Using Substitution

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6-2 Solving Systems Using Substitution

Example 1: Use substitution to solve

y = 3x

x + y = -32

Choose wisely . . .

6-2 Solving Systems Using Substitution

But My Dear weâ€™re still goodbying

Choose wisely . . .

6-2 Solving Systems Using Substitution

Example 2: Use substitution to solve

3y + 4x = 14

-2x + y = -3

6-2 Solving Systems Using Substitution

As long as you love me so

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?

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?