Algebra Class: Equations and Functions

Translating Sentences into Equations

• Translate word problems into algebraic equations
• Use variables to represent unknown quantities

Solving Equations Using Multiplication and Division

• Solve equations by isolating the variable
• Apply the properties of equality to simplify equations

Solving Equations Using the Distributive Property

• Simplify expressions by distributing a factor
• Combine like terms after applying the distributive property

Solving Absolute Value Equations

• Isolating the absolute value expression
• Consider cases where expressions can be positive or negative

Graphing Linear Functions Using Intercepts

• The x-intercept is the point where the line crosses the x-axis
• The y-intercept is the point where the line crosses the y-axis
• Use the intercepts to plot two points and draw the line

Calculating and Interpreting Rate of Change

• Rate of change represents how much one value changes in relation to another
• Calculate it using the difference of y-values divided by the difference of x-values

Rewriting Linear Equations in Slope-Intercept Form

• Slope-intercept form is y = mx + b, where 'm' is the slope and 'b' is the y-intercept
• Rewrite equations by isolating 'y' on one side

Graphing and Interpreting Linear Functions

• Graph linear functions using the slope and y-intercept
• Interpret the meaning of the slope and y-intercept in a real-world context

Applying the Arithmetic Sequence Formula

• Arithmetic sequences have a constant common difference
• The formula is a(n) = a(1) + (n - 1)d, where a(n) is the nth term, a(1) is the first term, n is the term number, and d is the common difference

Writing and Graphing Piecewise Defined Functions

• Piecewise functions have different rules for different intervals of the domain
• Graph each piece of the function separately, using closed or open circles at the endpoints depending on the inequality

Graphing Absolute Value Functions and Applying Translations

• The graph of y = |x| is a V-shaped graph
• Translations can shift the graph up, down, left, or right

Writing an Equation of a Line in Slope-Intercept Form Given Two Points

• Calculate the slope using the two points
• Use the slope and one point to find the y-intercept

Creating and Identifying Equations of Parallel or Perpendicular Lines

• Parallel lines have the same slope but different y-intercepts
• Perpendicular lines have slopes that are negative reciprocals of each other

Constructing the Inverses of Relations

• The inverse of a relation switches the x and y coordinates of each point.
• Graph the inverse by reflecting the original graph over the line y = x

Solving and Graphing Linear Inequalities Containing the Word "And"

• Solve each inequality separately
• The solution is the intersection of the solution sets of each inequality

Solving Proportions

• A proportion is an equation stating that two ratios are equal
• Solve using cross-multiplication

Solving Equations for Specific Variables

• Isolate the desired variable on one side of the equation by using inverse operations

Calculating and Interpreting Slope

• Slope measures the steepness of a line
• Positive slopes indicate an upward trend, negative slopes indicate a downward trend

Constructing Arithmetic Sequences

• Identify the common difference between consecutive terms
• Use this common difference to generate additional terms in the sequence

Writing Equations of Lines in Point-Slope Form

• Point-slope form is y - y1 = m(x - x1), where 'm' is the slope and (x1, y1) is a point on the line.
• Use a point and the slope to write the equation

Solving Multi-Step Linear Inequalities

• Follow similar steps as solving equations
• Remember to reverse the inequality symbol when multiplying or dividing by a negative value

Solving Linear Inequalities Containing the Word "Or"

• Solve each inequality separately
• The solution is the union of the solution sets of each inequality

This quiz covers key algebraic concepts including translating word problems into equations, solving equations through multiplication and division, and understanding the distributive property. Additionally, it explores absolute value equations and the graphing of linear functions using intercepts. Test your comprehension of these fundamental algebra topics.