Understand that any linear equation can be written in slope-intercept form y = mx + b. Learn how to calculate the slope of a line as the ratio of rise to run and investigate different slope properties.
Understand that expressions are simplified when replaced by equivalent expressions by combining all like terms and removing all parentheses. Learn to identify terms, like terms, and coefficients. Review and use the distributive property.
Understand that solving an equation means to find values of a variable that make the equation true. Discover equations can be changed as long as the same operation is performed to both sides. Learn to solve one- and two-step equations by isolating the variable.