options: Add and subtract within 20.

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

Rewrite rational expressions.

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

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

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

Work with radicals and integer exponents.

Gain familiarity with factors and multiples.

Analyze patterns and relationships.

Understand the relationship between zeros and factors of polynomials.

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

Represent and solve problems involving addition and subtraction.

Interpret the structure of expressions.

Represent and solve equations and inequalities graphically.

Solve problems involving the four operations, and identify and explain patterns in arithmetic.

Represent and analyze quantitative relationships between dependent and independent variables.

Solve systems of equations.

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

Generate and analyze patterns.

Solve equations and inequalities in one variable.

Work with addition and subtraction equations.

Use the four operations with whole numbers to solve problems.

Represent and solve problems involving multiplication and division.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Use polynomial identities to solve problems.

Write and interpret numerical expressions.

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

Multiply and divide within 100.

Use properties of operations to generate equivalent expressions.

Write expressions in equivalent forms to solve problems.

Create equations that describe numbers or relationships

Perform arithmetic operations on polynomials.

Reason about and solve one-variable equations and inequalities.

Understand solving equations as a process of reasoning and explain the reasoning.
problem_activity: Samantha found the slope of the line that passed through the points
$${(2, 6)}$$
and
$${(-4, 8)}$$
. Her work is shown below.
$${{8-6\over {2-(-4)}} = {2\over 2+4 }= {2\over 6} = {1\over3}}$$
Samantha made an error in her work. Describe the error and then find the correct slope of the line through the two given points.


correct_option_index: 5