ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
Playlist ACT® Coordinate Geometry 26 videos
ACT Math: Coordinate Geometry Drill 2, Problem 1. The number line shows which expression?
ACT Math: Coordinate Geometry Drill 2, Problem 2. Which expression is depicted by the number line?
ACT Math: Coordinate Geometry Drill 1, Problem 1. Which inequality is expressed by the number line?
ACT Math 2.2 Coordinate Geometry 208 Views
Share It!
Description:
ACT Math: Coordinate Geometry Drill 2, Problem 2. Which expression is depicted by the number line?
- Coordinate Geometry / Number line graphs
- Product Type / ACT Math
- Foreign Language / Arabic Subtitled
- Foreign Language / Chinese Subtitled
- Foreign Language / Korean Subtitled
- Foreign Language / Spanish Subtitled
- Coordinate Geometry / The relations between equations and graphs
- Coordinate Geometry / Graphing inequalities
Transcript
- 00:02
Here's your shmoop du jour...
- 00:04
Which expression is depicted by the number line?
- 00:06
And here are your potential answers...
- 00:10
Well, it's really all about knowing the distinction between greater than and greater
- 00:14
than OR EQUAL TO.
Full Transcript
- 00:20
In this case, we can just derive our own equation to describe this line.
- 00:25
We'll start with the x, which is gonna live here on the line inside these two points.
- 00:29
And note that the points are described with filled-in circles - not empty ones.
- 00:34
The fact that the circles are filled in means that the points are greater than or equal
- 00:38
to... or less than or equal to.
- 00:41
So another little curve ball they throw at you - the 7/8 here is left of the 0... i.e.,
- 00:46
it's negative.
- 00:48
So x is gonna have to be greater than or equal to negative 7/8.
- 00:52
On the right we see the 1/8, which x is less than or equal to.
- 00:57
And the only one that works... is A.
Related Videos
ACT Math: Plane Geometry Drill 3, Problem 1. What is the area of the trapezoid shape in the video?
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...
Does thinking about 3D Geometry get you bent out of shape? Never fear! Watch this video and figure out some fun new shapes to bend back into. We're...