Finding the Smallest Integer Value

Oct 13, 2025 by wbrum.org 54 views

Introduction

Inequalities are mathematical expressions that compare two values using greater than, less than, greater than or equal to, or less than or equal to symbols. Solving inequalities involves finding the values of the variable that make the inequality true. In this article, we will focus on solving a specific inequality and finding the smallest integer value that satisfies it.

The Inequality

The given inequality is:

3x - 6 \geq x - 2

This inequality can be solved by first combining like terms and then isolating the variable.

Step 1: Combine Like Terms

To combine like terms, we need to simplify the inequality by adding or subtracting the same value to both sides.

3x - 6 \geq x - 2

Subtracting $x$ from both sides gives us:

2x - 6 \geq -2

Step 2: Add 6 to Both Sides

Next, we add 6 to both sides to isolate the term with the variable.

2x - 6 + 6 \geq -2 + 6

This simplifies to:

2x \geq 4

Step 3: Divide Both Sides by 2

To solve for $x$ , we need to divide both sides by 2.

\frac{2x}{2} \geq \frac{4}{2}

This simplifies to:

x \geq 2

The Solution

The solution to the inequality is $x \geq 2$ . This means that any value of $x$ that is greater than or equal to 2 will satisfy the inequality.

Finding the Smallest Integer Value

Since we are looking for the smallest integer value of $x$ that satisfies the inequality, we need to find the smallest integer that is greater than or equal to 2.

The Smallest Integer Value

The smallest integer value of $x$ that satisfies the inequality is 2.

Conclusion

In this article, we solved the inequality $3x - 6 \geq x - 2$ and found the smallest integer value of $x$ that satisfies it. The solution to the inequality is $x \geq 2$ , and the smallest integer value of $x$ that satisfies the inequality is 2.

Why is it Important to Solve Inequalities?

Solving inequalities is an important skill in mathematics because it allows us to compare values and make decisions based on those comparisons. Inequalities are used in a wide range of applications, from finance to science, and are an essential tool for problem-solving.

Real-World Applications of Inequalities

Inequalities are used in many real-world applications, including:

Finance: Inequalities are used to compare interest rates and calculate investment returns.
Science: Inequalities are used to compare measurements and calculate rates of change.
Engineering: Inequalities are used to compare stresses and strains on materials and structures.

Tips for Solving Inequalities

Here are some tips for solving inequalities:

Always start by combining like terms.
Isolate the variable by adding or subtracting the same value to both sides.
Use inverse operations to solve for the variable.
Check your solution by plugging it back into the original inequality.

Common Mistakes to Avoid

Here are some common mistakes to avoid when solving inequalities:

Failing to combine like terms.
Not isolating the variable.
Using the wrong inverse operation.
Not checking the solution.

Conclusion

Introduction

In our previous article, we solved the inequality $3x - 6 \geq x - 2$ and found the smallest integer value of $x$ that satisfies it. In this article, we will answer some frequently asked questions about solving inequalities.

Q: What is an inequality?

A: An inequality is a mathematical expression that compares two values using greater than, less than, greater than or equal to, or less than or equal to symbols.

Q: How do I solve an inequality?

A: To solve an inequality, you need to follow these steps:

Combine like terms.
Isolate the variable by adding or subtracting the same value to both sides.
Use inverse operations to solve for the variable.
Check your solution by plugging it back into the original inequality.

Q: What is the difference between a linear inequality and a quadratic inequality?

A: A linear inequality is an inequality that can be written in the form $ax + b \geq c$ or $ax + b \leq c$ , where $a$ , $b$ , and $c$ are constants. A quadratic inequality is an inequality that can be written in the form $ax^2 + bx + c \geq 0$ or $ax^2 + bx + c \leq 0$ , where $a$ , $b$ , and $c$ are constants.

Q: How do I solve a quadratic inequality?

A: To solve a quadratic inequality, you need to follow these steps:

Factor the quadratic expression, if possible.
Set each factor equal to zero and solve for the variable.
Use a number line or a graph to determine the intervals where the inequality is true.
Write the solution in interval notation.

Q: What is the difference between a strict inequality and a non-strict inequality?

A: A strict inequality is an inequality that uses the greater than or less than symbol, such as $x > 2$ or $x < 3$ . A non-strict inequality is an inequality that uses the greater than or equal to or less than or equal to symbol, such as $x \geq 2$ or $x \leq 3$ .

Q: How do I determine the direction of the inequality?

A: To determine the direction of the inequality, you need to follow these steps:

Identify the variable and the constant.
Determine the sign of the coefficient of the variable.
If the coefficient is positive, the inequality is true for values greater than or equal to the constant. If the coefficient is negative, the inequality is true for values less than or equal to the constant.

Q: What is the difference between a linear inequality and a nonlinear inequality?

A: A linear inequality is an inequality that can be written in the form $ax + b \geq c$ or $ax + b \leq c$ , where $a$ , $b$ , and $c$ are constants. A nonlinear inequality is an inequality that cannot be written in the form $ax + b \geq c$ or $ax + b \leq c$ , such as $x^2 + 2x + 1 \geq 0$ .

Q: How do I solve a nonlinear inequality?

A: To solve a nonlinear inequality, you need to follow these steps:

Factor the nonlinear expression, if possible.
Set each factor equal to zero and solve for the variable.
Use a number line or a graph to determine the intervals where the inequality is true.
Write the solution in interval notation.

Conclusion

Solving inequalities is an important skill in mathematics that has many real-world applications. By following the steps outlined in this article, you can solve inequalities and answer frequently asked questions about solving inequalities. Remember to always combine like terms, isolate the variable, and use inverse operations to solve for the variable.