# Ch 2: Working with Linear Equations in Trigonometry: Help and Review

### About This Chapter

## Who's it for?

Anyone who needs help learning or mastering high school trigonometry material will benefit from taking this course. There is no faster or easier way to learn high school trigonometry. Among those who would benefit are:

- Students who have fallen behind in understanding how to write and graph linear equations
- Students who struggle with learning disabilities or learning differences, including autism and ADHD
- Students who prefer multiple ways of learning math (visual or auditory)
- Students who have missed class time and need to catch up
- Students who need an efficient way to learn about linear equations
- Students who struggle to understand their teachers
- Students who attend schools without extra math learning resources

## How it works:

- Find videos in our course that cover what you need to learn or review.
- Press play and watch the video lesson.
- Refer to the video transcripts to reinforce your learning.
- Test your understanding of each lesson with short quizzes.
- Verify you're ready by completing the Working with Linear Equations in Trigonometry chapter exam.

## Why it works:

**Study Efficiently**: Skip what you know, review what you don't.**Retain What You Learn**: Engaging animations and real-life examples make topics easy to grasp.**Be Ready on Test Day**: Use the Working with Linear Equations in Trigonometry chapter exam to be prepared.**Get Extra Support**: Ask our subject-matter experts any linear equations question. They're here to help!**Study With Flexibility**: Watch videos on any web-ready device.

## Students will review:

In this chapter, you'll learn the answer to questions including:

- How do I write the slope-intercept form of a linear equation?
- How can I apply the distributive property to linear equations?
- What is the standard written form of a linear equation?
- How can I graph undefined and zero slopes?
- What is the point-slope formula?
- How do I compare the equations of parallel and perpendicular lines?

### 1. What is a Linear Equation?

A linear equation is a pattern of numbers with proportional increase or decrease that is used to represent a line graph. Learn how to plot a graph and build and solve a linear equation.

### 2. Applying the Distributive Property to Linear Equations

In mathematics, the distributive property shows that the same answer will result whether one number is multiplied by each integer in a group of numbers or by the sum of the group of numbers. Learn about applying the distributive property to linear equations and work examples to practice the steps, including the final steps needed to solve the equations.

### 3. Linear Equations: Intercepts, Standard Form and Graphing

To solve a linear equation, begin by determining whether it is written in the standard form or the slope-intercept form. Explore the differences between the slope-intercept form and the standard form of a linear equation, and learn how to graph the point of intercept for each.

### 4. Abstract Algebraic Examples and Going from a Graph to a Rule

Abstract algebraic concepts are often difficult to understand because they do not include many numbers but are mostly variables and letters. Learn more about abstract algebraic concepts, finding the equation on a graph, identifying graphs by appearance, and finding the greatest slope on a graph.

### 5. Graphing Undefined Slope, Zero Slope and More

When the variable determining the slope is mathematically impossible but can still be graphed, it is referred to as an undefined slope. Learn how to compute formulas to graphs that have either undefined slope or zero slopes, and discover what this means for the line.

### 6. Graphs of Parallel and Perpendicular Lines in Linear Equations

Linear equations, which are graphed as straight lines, can have associated parallel lines which never touch, and perpendicular lines that intersect at 90 degrees. Learn the equations and see the graphs of these two types of linear equations.

### 7. How to Write a Linear Equation

Rather than drawing a graph from an equation, graphs can be used to determine equations using common algebraic techniques. Learn how to write a linear equation using two points and the slope formula as well as using background information on parallel and perpendicular lines.

### 8. Equation of a Line Using Point-Slope Formula

The point-slope formula is composed of a specific point of coordinates and a slope indicating a type of change over a given variable, such as distance over time. Identify the use of point-slope formula in graphing a line through provided examples.

### Earning College Credit

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### Other Chapters

Other chapters within the High School Trigonometry: Help and Review course

- Real Numbers - Types and Properties: Help and Review
- Working with Inequalities in Trigonometry: Help and Review
- Absolute Value Equations in Trigonometry: Help and Review
- Working with Complex Numbers in Trigonometry: Help and Review
- Systems of Linear Equations in Trigonometry: Help and Review
- Mathematical Modeling in Trigonometry: Help and Review
- Introduction to Quadratics in Trigonometry: Help and Review
- Working with Quadratic Functions in Trigonometry: Help and Review
- Coordinate Geometry Review: Help and Review
- Functions for Trigonometry: Help and Review
- Understanding Function Operations in Trigonometry: Help and Review
- Graph Symmetry in Trigonometry: Help and Review
- Graphing with Functions in Trigonometry: Help and Review
- Basic Polynomial Functions in Trigonometry: Help and Review
- Higher-Degree Polynomial Functions in Trigonometry: Help and Review
- Rational Functions in Trigonometry: Help and Review
- Trig - Rational Expressions & Function Graphs: Help & Review
- Exponential & Logarithmic Functions in Trigonometry: Help and Review
- Trigonometric Functions: Help and Review
- Geometry in Trigonometry: Help and Review
- Triangle Trigonometry: Help and Review
- Working with Trigonometric Graphs: Help and Review
- Trigonometric Equations: Help and Review
- Working with Trigonometric Identities: Help and Review
- Applications of Trigonometry: Help and Review
- Analytic Geometry & Conic Sections in Trigonometry: Help and Review
- Vectors, Matrices & Determinants in Trigonometry: Help and Review
- Polar Coordinates & Parameterizations: Help and Review
- Circular Arcs, Circles & Angles: Help and Review
- TASC Math: Trigonometry