What Is a Grid in Math?

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A grid in math is usually made up of two axis and is known as a coordinate plane. Find out about a grid in math with help from an experienced mathematics educator in this free video clip.

Part of the Video Series: Math Lessons & Tips
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Video Transcript

Hi, my name is Marija, and today I'm gonna tell you what a grid is in math. A grid, also known as a coordinate plane, is made up of two axis, your x and your y axis. The x axis is the horizontal line running across this way, and your y axis is the vertical line going up and down. At the center where the x and y axis intersect, that point is called your origin, and that point is zero, zero. From the origin going to the right, that's where your positive x values are. So we'd start at one, two, three, four, so on and so forth, and from the origin going left, you're just thinking of a number line, the positives are to the right, and the negatives are to the left. So we would start with negative one, negative two, negative three, so and so forth. Back to the origin, if we go up from there, we're gonna have the positive y value. So we'll be at one, two, three, so on and so forth. And going down from the origin, we're gonna have the negative y values, negative one, negative two, negative three, so on and so forth. Now the grid is split into four, what looks like squares, and those are called quadrants, and your first quadrant is in the upper right-hand corner, and its indicated by roman numeral one. And then we're gonna go counter-clockwise, to give us quadrant number two, quadrant number three, and quadrant number four. And on this grid, basically it's used to plot points for a lot of different reasons to draw lines and scatter plots, and the most important thing is to know how to plot points. So if you're given a point like three, four. The point three, four, the three is your x coordinate, so you're gonna gonna go to three in your x axis, and then you're gonna go to four on your y axis, and that's where you plot the point three, four. And this is a grid in math.


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