ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
Geometry Videos 251 videos
Haven't you always wondered how much cardboard it takes to encase a trunk warmer for your pet elephant?
Want to figure out the area and perimeter of irregular shapes? Break them down into regular shapes. For example, a flower can be broken down into s...
It's one thing when all those shapes are sitting flat on the page. But when they start popping out and invading our personal space bubble, we get a...
ACT Math 2.1 Coordinate Geometry 246 Views
Share It!
Description:
ACT Math: Coordinate Geometry Drill 2, Problem 1. The number line shows which expression?
- Coordinate Geometry / Number line graphs
- Product Type / ACT Math
- Foreign Language / Arabic Subtitled
- Foreign Language / Spanish Subtitled
- Foreign Language / Chinese Subtitled
- Foreign Language / Korean Subtitled
- Coordinate Geometry / The relations between equations and graphs
- Coordinate Geometry / Graphing inequalities
Transcript
- 00:02
Here's your shmoop du jour...
- 00:04
The number line shows which expression? And here are your potential answers...
- 00:10
OK, so we note 2 very important things right off the bat - there are open circles,
- 00:14
at the points negative 2 and positive 4.
- 00:17
Those open circles mean that the line can be greater
Full Transcript
- 00:20
than or less than but not equal to...
- 00:23
So right away we can see that A and C are going to be raccoon food.
- 00:28
Let's brute force the rest... we'll take a look at E and work our way up.
- 00:32
Here, x is GREATER than negative 4... but already we're in foul territory because the
- 00:36
line here doesn't connect or tie in with negative 4 at all...
- 00:39
...it just crosses over it... so we can quickly toss E. On to D.
- 00:44
Here x is bigger than negative 2... which also doesn't work.
- 00:47
The line shown is LOWER or more negative than negative 2, not bigger. So we can toss D.
- 00:54
Last chance is B... which ... works!
- 00:57
X is smaller or more negative than negative 2 and not equal to it here - check;
- 01:02
...and x is greater than but not equal to positive 4 here - check.
- 01:07
B is our answer. Done.
Related Videos
ACT Math: Plane Geometry Drill 3, Problem 1. What is the area of the trapezoid shape in the video?
ACT Math: Coordinate Geometry Drill 1, Problem 1. Which inequality is expressed by the number line?
ACT Math: Intermediate Algebra: Drill 3, Problem 1. Find the fifth number in the series.
Haven't you always wondered how much cardboard it takes to encase a trunk warmer for your pet elephant?
Want to figure out the area and perimeter of irregular shapes? Break them down into regular shapes. For example, a flower can be broken down into s...