ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
Math III Videos 103 videos
This video can run circles around other videos about circles. Sir Cumference, of Round Table fame, explains all the properties of… well, circles....
Time to learn about the area of a sector. And no, that's not the sector's bedroom with a bumper sticker on the door that reads, "GO AWAY."
It's super useful to be able to find the distance around stuff. Like when you’re being pursued by authorities while running around the base of an...
ACT Math 1.5 Coordinate Geometry 258 Views
Share It!
Description:
ACT Math: Coordinate Geometry Drill 1, Problem 5. Which ordered pair is not on the line shown?
- Coordinate Geometry / The standard coordinate plane (x, y)
- Product Type / ACT Math
- Foreign Language / Arabic Subtitled
- Foreign Language / Korean Subtitled
- Foreign Language / Spanish Subtitled
- Foreign Language / Chinese Subtitled
- Geometry / Properties, dimension, and modeling
- Coordinate Geometry / Midpoints
Transcript
- 00:02
Here's your shmoop du jour.
- 00:04
Which ordered pair is not on the line shown?
- 00:08
And here are your options...
- 00:12
OK so it's one of those "NOT" questions. Which means we have to go through each answer
- 00:17
choice to figure out which one of those ordered pairs is NOT on the line...(0,1).
Full Transcript
- 00:22
Yup the line intersects the y-axis
- 00:25
at (0,1). (-4, -2)...yeah... the line intersects that
- 00:29
point in the bottom left-hand quadrant of the coordinate plane.
- 00:32
(-4, -1)...wait didn't we just have the x coordinate of -4 correspond with the y-coordinate
- 00:38
of negative 2?
- 00:41
The definition of functions tells us that that every input has one and only one output.
- 00:46
So if (-4,-2) is on the line... (-4,-1) can't be. Looks like our answer has to be C.
- 00:54
But just to be sure...(4,5) is on the line in the upper right hand corner here...
- 00:58
Last choice...(2, 2.5). The graph doesn't
- 01:02
have perfect tick marks...but it looks close enough...definitely more accurate than (-4,-1).
- 01:07
So our answer is indeed C.
Related Videos
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.
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...