Algebra-1

Algebra 1 or elementary algebra includes the traditional topics studied in the modern elementary algebra course. Basic arithmetic operations comprise numbers along with mathematical operations such as +,  -,  x,  ÷.  While, algebra involves variables like x, y, z, and mathematical operations like addition, subtraction, multiplication, and division to form a meaningful mathematical expression.

Algebra helps in the representation of different situations or problems as mathematical expressions. The concepts that come under algebra 1 or elementary algebra include variables, evaluating expressions and equations, properties of equalities and inequalities, solving the algebraic equations and linear equations which have one or two variables, and so on.

Table of Contents

What is Algebra 1?

Algebra 1- consists of the general concepts of algebra. It introduces evaluating equations and inequalities, real numbers, and their properties, which include additive and multiplicative identities, inverse operations, and the distributive and commutative properties. In algebra 1, we will also be introduced to the concept of polynomials, and will also incorporate a bit of geometry to calculate the area, volume, and perimeters of shapes using algebraic expressions instead of numbers.

Algebra 1 or elementary algebra deals with solving the algebraic expressions for a viable answer. In algebra 1, simple variables like x, y, are represented in the form of an equation. Based on the degree of the variable the equations can be categorized into different types, namely linear equations, quadratic equations, cubic equations, and so on. Linear equations are of the forms of ax + b = c, ax + by + c = 0, ax + by + cz + d = 0.  Elementary algebra based on the degree of the variables, branches out into quadratic equations and polynomials. A general form of representation of a quadratic equation is ax2 + bx + c = 0, and for a polynomial equation, it is ax+ bxn-1+ cxn-2+ .....k = 0.

Algebra 1 Topics

Algebra is divided into numerous topics to help for a detailed study. Algebra 1 is divided into 12 chapters and each chapter is divided into several lessons. These 12 chapters in Algebra 1 are given as,

Chapter 1: Real Numbers and Their Operations

Chapter 2: Linear Equations and Inequalities

Chapter 3: An Introduction To Functions

Chapter 4: Graphing Lines

Chapter 5: Solving Linear Systems

Chapter 6: Polynomials and Their Operations

Chapter 7: Factoring and Solving by Factorization

Chapter 8: Exponents And Exponential Functions

Chapter 9: Rational Expressions and Equations

Chapter 10: Radical Expressions and Equations

Chapter 11: Solving Quadratic Equations and Graphing Parabolas

Chapter 12: Data Analysis And Probability

Laws of Algebra

The basic laws of algebra are the associative, commutative, and distributive laws that are presented in the table below:

Property Name Definition Example
Commutative Law For Addition

(a + b) = (b + a). According to the commutative property, swapping the positions of operands in an operation does not affect the result.

If (4x + 3x) = 7x, then (3x + 4x) = 7x

Commutative Law For Multiplication

(a × b) = (b × a). According to the commutative property, swapping the positions of operands in an operation does not affect the result.

If  (2x × 4) = 8x, then (4 × 2x) = 8x

Associative Law For Addition

a + (b + c) = (a + b) + c. This grouping of addends does not affect the sum.

If 3y + (4y + 5y) = (3y + 9y) = 12y, then (3y + 4y) + 5y = 7y + 5y = 12y

Associative Law For Multiplication

a × (b × c) = b × (a × c). This grouping of factors does not affect the product.

If 3a × (2b × 5c) = 3a × (10bc) = 30abc, then, 2b × (3a × 5c) = 2b × (15ac) = 30abc

Distributive Law For Addition

a × (b + c) = (a × b) + (a × c). Adding two numbers and then multiplying them with a third gives the same result as multiplying the two numbers individually to the third and thereafter adding the obtained result.

If 4x × (3y + 2y) = (4x × 5y) = 20xy, then (4x × 3y) + (4x × 2y) = 12xy + 8xy = 20xy

Distributive Law for Subtraction

a × (b - c) = (a × b) - (a × c). Subtracting two numbers and then multiplying them with a third gives the same result as multiplying the two numbers individually to the third and thereafter subtracting the obtained result. If 4x × (3y - 2y) = (4x × y) = 4xy, then (4x × 3y) - (4x × 2y) = 12xy - 8xy = 4xy

The rules for different properties under algebra 1 can be understood better as shown below,

properties of algebra 1

Important Notes

  • The addition property of inequality: Adding the same number to each side of the inequality produces an equivalent inequality.
  • Negative exponents: The reciprocals of the positive exponents in exponential functions.
  • The quotient of powers property: It tells us that when we divide the powers with the same base we just have to subtract the exponents.
  • The constants have a monomial degree of 0.

Difference Between Algebra 1 and Algebra 2

Algebra 1 and Algebra 2 can be distinguished based on the complexity and use of algebraic expressions. The following table explains the important differences between algebra 1 and algebra 2.

Algebra 1 Algebra 2
Algebra 1 introduces you to the general concepts of algebra. You learn about variables, functions, and the most important concept in all of algebra. Algebra 2 is much more advanced. It's also much more miscellaneous: you learn about everything from logarithms and complex numbers to implicit functions and conics to the fundamental theorem of algebra.
Algebra 1 helps students to have the basic command in algebra topics. Algebra 2 increases complexity and understanding of the topics learned in algebra 1.
In this, students learn how to manipulate exponents or polynomials and write them in simpler forms, etc. In this, students learn to apply the skills thus obtained in algebra 1 and also learn more difficult techniques.
Algebra 1 is concentrated on solving equations and inequalities Algebra 2 concentrates on additional types of equations, such as exponential and logarithmic equations.
Algebra 1 is essential to understand algebra 2. Algebra 2 is essential for understanding concepts coming on calculus. 

Tips and Tricks on Algebra 1

  • To understand Algebra 1, we need to be familiar with the pre-algebra topics like integers, one-step equations, inequalities and equations, graphs and functions, percent, probabilities, an introduction to geometry, and, right triangles. Once we go through a refresher, then we can proceed to algebra 1.
  • When multiplying two rational expressions in algebra, there is always a risk of getting false solutions or extraneous solutions so be careful with your calculations part.
  • We can add polynomials by just adding the like terms to combine the two polynomials into one.

FAQs on Algebra 1

What is Algebra 1?

Elementary algebra or Algebra 1 includes the basic traditional topics studied in the modern elementary algebra course. Basic arithmetic operations comprise numbers along with mathematical operations such as +,  -,  x,  ÷.  While, algebra involves variables as well like x, y, z, and mathematical operations like addition, subtraction, multiplication, and division to form a meaningful mathematical expression.

What is Considered Algebra 1?

Algebra 1 consists of the general concepts of algebra. It introduces evaluating equations and inequalities, real numbers, and their properties, which include additive and multiplicative identities, inverse operations, and the distributive and commutative properties.

What is the Difference Between Algebra 1 and Algebra 2?

The difference between Algebra 1 and Algebra 2 can be understood using the following points:

  • Algebra 1 helps students to have the basic command in algebra topics, while algebra 2 increases complexity and understanding of the topics learned in algebra 1.
  • In algebra 1, students learn how to manipulate exponents or polynomials and write them in simpler forms, etc, while in Algebra 2, students learn to apply the skills thus obtained in algebra 1 and also learn more difficult techniques.
  • Algebra 1 is concentrated on solving equations and inequalities. But, algebra 2 concentrates on additional types of equations, such as exponential and logarithmic equations.
  • Algebra 1 is essential to understand algebra 2, whereas, algebra 2 is essential for understanding concepts coming on calculus. 

What is Standard Form in Algebra 1?

A standard form in Algebra 1 is a form of writing a given mathematical concept like an equation, number, or an expression in a form that follows certain rules.

How to Learn Algebra 1 Fast?

The concepts of algebra 1 can be mastered by following certain instructions. The key points given below will help you ensure a thorough grasping of elementary algebra.

  • Focus on basic arithmetic concepts. 
  • Remember PEMDAS rule.
  • Learn to distinguish clearly between the roles of variables, constants, exponents, and negative and positive numbers.
  • Do a thorough revision of formulas.
  • Work on practice problems.

What Grade is Algebra 1?

Algebra 1 or elementary algebra is the first math class you are required to take as part of your middle school. We study real numbers, exploring solving, writing, and graphing linear equations in this part of Algebra. Also polynomials, as well as quadratic equations and functions are included in Algebra 1.

What Topics are Covered in Algebra 1?

The topics covered in algebra 1 are divided into different chapters. These chapters can be broadly classified into the following categories:

  • Real Numbers and Their Operations
  • Linear Equations and Inequalities
  • An Introduction To Functions
  • Graphing Lines
  • Solving Linear Systems
  • Polynomials and Their Operations
  • Factoring and Solving by Factoring
  • Exponents And Exponential Functions
  • Rational Expressions and Equations
  • Radical Expressions and Equations
  • Solving Quadratic Equations and Graphing Parabolas
  • Data Analysis And Probability

Is Algebra 1 or 2 Harder?

Algebra 1 is the building block of algebra 2. Algebra 2 is a higher and more complex course, hence algebra 2 is a lot harder than algebra 1.

What is the First Thing you Learn in Algebra 1?

The first thing students learn in algebra 1 is real numbers and their operations.

What are the Prerequisites to Understand Algebra 1 Better?

To understand Algebra 1, it is an advantage if you know the foundations of arithmetic, integers, fractions, decimals, percent, ratio, proportion, probabilities, an introduction to geometry, and, right triangles.


Solved Examples on Algebra 1

Example 1: Using laws and properties of algebra 1, evaluate the expression (4 × (x + 2)), where x = 5.

Solution:

Given, x = 5. Putting the value of x in 4 × (x + 2), we get, 4 × (5 + 2) = 4 × 7 = 28.

Example 2: Solve the given expression for the value of x, 4 + 3 = x.

Solution:

Given, 4 + 3 = x. We will simply do the addition of the given expression and get the value of x. 4 + 3 is equal to 7, or x = 4 + 3 = 7.

Therefore, the value of x is 7.

Practice Questions on Algebra 1

Here are a few activities for you to practice. Select/Type your answer and click the "Check Answer" button to see the result.

 
 
 
 
  
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