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Big Ideas Math: Modeling Real Life, Grade 8

BI

Big Ideas Math: Modeling Real Life, Grade 8 View details

7. Writing Equations in Point-Slope Form

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Exercise 3 Page 183

Gather all of the variable terms on one side of the equation and all of the constant terms on the other side.

No solution.

Practice makes perfect

To solve an equation, we should first gather all of the variable terms on one side and all of the constant terms on the other side using the Properties of Equality.

2x+3=2x

LHS-2x=RHS-2x

2x+3-2x=2x-2x

CommutativePropAdd

Commutative Property of Addition

2x-2x+3=2x-2x

Subtract term

3 ≠ 0

Simplifying the equation resulted in a contradiction since there is no equivalence for x. Therefore, the equation has no solution.

Subchapter links

Try It p.180-181

Self-Assessment for Concepts & Skills p.181

Self-Assessment for Problem Solving p.182

Review & Refresh p.183

Concepts, Skills, & Problem Solving p.183-184