## 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 π₯ Β± π = π and ππ₯ = π for cases in which π, π and π₯ are all nonnegative rational numbers.

Solve linear equations with rational number coefficients, including equations with variables on both sides and whose solutions require expanding expressions using the distributive property and collecting like terms.

Give examples of linear equations in one variable with one solution, infinitely many solutions, or no solutions. Show which of these possibilities is the case by successively transforming the given equation into simpler forms, until an equivalent equation of the form π₯ = π, π = π, or π = π results (where π and π are different numbers).

Expressions & Equations: Understand the connections between proportional relationships, lines, and linear equations.

Describe solving an equation or inequality as a process of answering a question: Which values from a specified set, if any, make the equation or inequality true? Use substitution to determine whether a given number in a specified set makes an equation or inequality true.

Expressions & Equations: Reason about and solve one-variable equations and inequalities.

Use similar triangles to explain why the slope π is the same between any two distinct points on a non-vertical line in the coordinate plane; derive the equation π¦ = ππ₯ for a line through the origin and the equation π¦ = ππ₯ + π for a line intercepting the vertical axis at π.

Graph proportional relationships, interpreting the unit rate as the slope of the graph. Compare two different proportional relationships represented in different ways.

Expressions & Equations: Analyze and solve linear equations and pairs of simultaneous linear equations.