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Coordinates and Graphs Videos 64 videos
ACT Math: Coordinate Geometry Drill 1, Problem 1. Which inequality is expressed by the number line?
The video will show you how to plot points in 3D using the axes of the 3D coordinate system. Make sure you're wearing your special glasses for this...
When graphing inequalities, you graph the line, shade the corresponding side, and plug in the point. The end!
CAHSEE Math 4.2 Algebra I 184 Views
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Description:
Algebra I Drill 4, Problem 2. Which of the following points is on the line 5 x - 2 y = 30?
Transcript
- 00:03
Shmoop, there it is...
- 00:05
Which of the following points is on the line 5x - 2y = 30?
- 00:09
And here are the potential answers…
- 00:14
So… how do we solve this problem?
- 00:15
We can just pop in the numbers given to us and see if we get the desired result.
Full Transcript
- 00:20
We’ll start with A. We have 5 times 4, which is 20… minus 2 times negative 5, which is
- 00:26
negative 10… so 20 minus negative 10 is… 30. And uh – yeah. Wow that was fast.
- 00:34
Our answer is A. As in, "Already done."
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