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Big Ideas Math Integrated I, 2016 View details

1. Solving Systems of Linear Equations by Graphing

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Exercise 36 Page 222

Apply inverse operations to isolate y.

y=- 3x+20

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.

3/4x+1/4y=5

SubEqn

LHS-3/4x=RHS-3/4x

1/4y=-3/4x+5

MultEqn

LHS * 4=RHS* 4

y=4(-3/4x+5)

Distr

Distribute 4

y=4(-3/4x)+4(5)

Multiply

y=4(-3/4x)+20