options: Understand solving equations as a process of reasoning and explain the reasoning.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Work with equal groups of objects to gain foundations for multiplication.

Use the four operations with whole numbers to solve problems.

Gain familiarity with factors and multiples.

Solve real-life and mathematical problems using numerical and algebraic expressions and equations.

Analyze and solve linear equations and pairs of simultaneous linear equations.

Understand and apply properties of operations and the relationship between addition and subtraction.

Use polynomial identities to solve problems.

Write expressions in equivalent forms to solve problems.

Solve equations and inequalities in one variable.

Reason about and solve one-variable equations and inequalities.

Represent and solve problems involving addition and subtraction.

Multiply and divide within 100.

Understand the relationship between zeros and factors of polynomials.

Work with radicals and integer exponents.

Understand the connections between proportional relationships, lines, and linear equations.

Generate and analyze patterns.

Represent and analyze quantitative relationships between dependent and independent variables.

Understand properties of multiplication and the relationship between multiplication and division.

Interpret the structure of expressions.

Use properties of operations to generate equivalent expressions.

Create equations that describe numbers or relationships

Add and subtract within 20.

Represent and solve equations and inequalities graphically.

Perform arithmetic operations on polynomials.

Analyze patterns and relationships.

Solve systems of equations.

Represent and solve problems involving multiplication and division.

Rewrite rational expressions.

Write and interpret numerical expressions.

Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.

Work with addition and subtraction equations.

Solve problems involving the four operations, and identify and explain patterns in arithmetic.
problem_activity: Anton writes a model that describes the number of tacos his friends eat as a function of the cost of the total tacos. Below is a graph of the model.
[IMG]
Anton writes a second model that describes the total cost of the tacos as a function of the number of tacos his friends eat. Below is a graph of the model.
[IMG]
Label the axes appropriately. Which one makes more sense?
How are these two graphs similar? Different?
How are these two equations similar? Different?


correct_option_index: 22