Download presentation

Presentation is loading. Please wait.

1
Interval Notation

2
**Interval Notation- Uses inequalities to describe subsets of real numbers.**

Example: This is an example of a Bounded Interval That is because x is in the middle or bound by the numbers on the end -2 ≤ x < 6

3
**We will use brackets and parenthesis to represent the numbers that x can be**

Since x can be equal to -2 we use a bracket: [ This means that x starts at -2 and can be equal to it -2 ≤ x < 6 [-2

4
**-2 ≤ x < 6 [-2 , 6) Since x cannot be 6, we’ll use a parenthesis )**

This means that x is less than 6 and cannot equal it -2 ≤ x < 6 [-2 , 6)

5
**Let’s look at it from the answer!**

6
**(-5, 9] = -5 9 < x ≤ -5 is the starting point on the left**

Write an inequality to represent the following interval notation: (-5, 9] = -5 9 < x ≤ -5 is the starting point on the left Parenthesis mean not equal 9 is the end point on the right Bracket means it is equal to

7
**x ≤ 6 ∞ Unbounded Interval**

Example: Write the following in interval notation: In this case the x is not in the middle of two numbers That means it’s not “bound” There are a infinite amount of numbers that are less than 6, so we’re going to have to use the infinity sign x ≤ 6 ∞

8
**x ≤ 6 (-∞ , 6] Since x is smaller than 6, the 6 is the right bound**

Use a bracket since it can be equal to The other side has an infinite number of solutions, so we’ll use the infinity sign Since it goes on forever in a negative direction, ∞ has to be negative Since you can’t equal infinity, use a parenthesis (-∞ , 6]

Similar presentations

© 2024 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google