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Big Ideas Math: Modeling Real Life, Grade 8
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Big Ideas Math: Modeling Real Life, Grade 8 View details
4. Rewriting Equations and Formulas
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Exercise 13 Page 29

Apply inverse operations to isolate y.

y=4-1/3x

Practice makes perfect
To solve the given literal equation for y, we will use the Properties of Equality to apply inverse operations on the equation. Remember, only like terms can be combined.
1/3x+y=4
SubEqn

LHS-1/3x=RHS-1/3x

1/3x+y-1/3x=4-1/3x
SubFrac

Subtract fractions

y=4-1/3x
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arrow_right Try It p.26-27
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Try It 2 (Page 26)
Try It 3 (Page 26)
Try It 4 (Page 26)
Try It 5 (Page 26)
Try It 6 (Page 26)
Try It 7 (Page 27)
arrow_right Self-Assessment for Concepts & Skills p.27
Self-Assessment for Concepts & Skills 8 (Page 27)
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arrow_right Self-Assessment for Problem Solving p.28
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arrow_right Review & Refresh p.29
Review & Refresh 1 (Page 29)
Review & Refresh 2 (Page 29)
Review & Refresh 3 (Page 29)
Review & Refresh 4 (Page 29)
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arrow_right Concepts, Skills, & Problem Solving p.29-30
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Concepts, Skills, & Problem Solving 13 (Page 29)
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Concepts, Skills, & Problem Solving 32 (Page 30)