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# CCSS.Math.Content.8.F.A.3

## Standards with the same topic and subject but for other grades

Solve real-world and mathematical problems by writing and solving equations of the form πΉ + π± = π² and π±πΉ = π² for cases in which π±, π² and πΉ are all nonnegative rational numbers.

Represent and analyze quantitative relationships between dependent and independent variables.

Use variables to represent two quantities in a real-world problem that change in relationship to one another; write an equation to express one quantity, thought of as the dependent variable, in terms of the other quantity, thought of as the independent variable. Analyze the relationship between the dependent and independent variables using graphs and tables, and relate these to the equation.

Explain what a point (πΉ, πΊ) on the graph of a proportional relationship means in terms of the situation, with special attention to the points (0, 0) and (1, π³) where π³ is the unit rate.

Solve word problems leading to equations of the form π±πΉ + π² = π³ and π±(πΉ + π²) = π³, where π±, π², and π³ are specific rational numbers. Solve equations of these forms fluently. Compare an algebraic solution to an arithmetic solution, identifying the sequence of the operations used in each approach.

Write and solve real-world and mathematical problems in the form of one-step, linear equations involving nonnegative rational numbers.

Explain what a point (π₯, π¦) on the graph of a proportional relationship means in terms of the situation, with special attention to the points (0, 0) and (1, π) where π is the unit rate.