### Inequalities on a Number Line

Shows how to represent an inequality on a number line.

Grades 6 through 8 Material from CK-12

#### Why Use This Content?

See when students have begun their work. Or not.

#### Standards

##### 6.NS.C.5

Understand that positive and negative numbers are used together to describe quantities having opposite directions or values (e.g., temperature above/below zero, elevation above/below sea level, credits/debits, positive/negative electric charge); use positive and negative numbers to represent quantities in real?world contexts, explaining the meaning of 0 in each situation.

##### 6.NS.C.6

Understand a rational number as a point on the number line. Extend number line diagrams and coordinate axes familiar from previous s to represent points on the line and in the plane with negative number coordinates.

##### 6.NS.C.6.A

Understand a rational number as a point on the number line. Extend number line diagrams and coordinate axes familiar from previous s to represent points on the line and in the plane with negative number coordinates.

##### 6.NS.C.7

Understand ordering and absolute value of rational numbers.

##### 6.NS.C.7.A

Understand ordering and absolute value of rational numbers.

##### 8.NS.A.2

Use rational approximations of irrational numbers to compare the size of irrational numbers, locate them approximately on a number line diagram, and estimate the value of expressions (e.g., p2).

##### 6.EE.B.5

Understand solving an equation or inequality as a process of answering a question: which values from a specified set, if any, make the equation or inequality true? Use substitution to determine whether a given number in a specified set makes an equation or inequality true.

##### 6.EE.B.8

Write an inequality of the form x > c or x < c to represent a constraint or condition in a real?world or mathematical problem. Recognize that inequalities of the form x > c or x < c have infinitely many solutions; represent solutions of such inequalities on number line diagrams.