The Coordinate Plane
"The Treasure Hunt"
In this video, our protagonist finds a treasure map laid out as a coordinate plane. To get to the treasure, he needs to use what he knows about coordinate plane. He reviews the concepts of x-axis, y-axis, origin and ordered pairs as he tries to find his treasure.

Yo on the real, my life is crazy like in movies,
I've been searching for years for gold, jewels and rubies.
I finally have a treasure map, and it’s old,
I’m in the Dungeon of Axes, and it's cold.
And it’s booby-trapped so I need to know,
Where to find the traps and where to find the gold.
Lucky for me, my map? It glows,
It’s a coordinate plane, let’s see what it holds:
The x-axis is a number line,
It goes across the map, it’s really wide.
And the y-axis isn’t wide, it’s tall,
It goes up and down my map, that's all.
Where they cross? That’s the origin,
Where I entered the dungeon, and where I begin.
That’s where x = 0, and y does too,
If I didn’t understand that, I wouldn’t have a clue.
Feeling richer than a boss,
My x-axis goes across,
My y-axis, it climbs.
So when I graph, I graph (x,y),
And get paid on a plane, now let’s ride...
Yeah, so my graph is empty... but wait!
Below is a list of things that I need to locate:
There is a pit at (2,5),
What does that mean? If I don’t know I might die.
Then I see it says (x,y),
So the x-coordinate is first, and then y,
So (2,5)? I count 2 to the right,
Then I count 5 up on the y, alright.
Right there, is a point, that would be a pit,
I put P on the map, yeah that’s it.
There’s a swinging blade at (3,1),
So I count 3 on the x-axis, son.
I count one up on the y,
I put a B for blade on the spot, no lie.
(2,5) and (3,1) are both ordered pairs,
A pair of numbers that will show me where.
The treasure itself is at (3,6),
I plot that point on the map real quick.
And then I count out my steps,
Until I see so much gold that it takes away my breath.
Feeling richer than a boss,
My x-axis goes across,
My y-axis, it climbs.
So when I graph, I graph (x,y),
And get paid on a plane, now let’s ride...

A coordinate plane is a graph with a horizontal number line, called the x-axis, and a vertical number line, called the y-axis. Points on a coordinate plane are identified by their distance on each of the axes.

A coordinate plane is a graph with a horizontal number line, called the x-axis, and a vertical number line, called the y-axis. Points on a coordinate plane are identified by their distance on each of the axes.

The x-axis extends from left to right.

The x-axis extends from left to right.

The y-axis goes from bottom to top.

The y-axis goes from bottom to top.

The origin is the zero point on both number lines, and the point where the x-axis and y-axis intersect.

The origin is the zero point on both number lines, and the point where the x-axis and y-axis intersect.

Coordinates are given as ordered pairs, with the coordinate on the x-axis first and the coordinate on the y-axis second. If both numbers are positive, the coordinate is in the first quadrant. If the first is positive and the second is negative, the coordinate is in the second quadrant. If both numbers are negative, the coordinate is in the third quadrant. If the first number is negative and the second is positive, the coordinate is in the fourth quadrant. The ordered pair (2, 5) refers to a point that is 2 away from 0 on the x-axis and 5 away from 0 on the y-axis. It is in the first quadrant.

Coordinates are given as ordered pairs, with the coordinate on the x-axis first and the coordinate on the y-axis second. If both numbers are positive, the coordinate is in the first quadrant. If the first is positive and the second is negative, the coordinate is in the second quadrant. If both numbers are negative, the coordinate is in the third quadrant. If the first number is negative and the second is positive, the coordinate is in the fourth quadrant. The ordered pair (2, 5) refers to a point that is 2 away from 0 on the x-axis and 5 away from 0 on the y-axis. It is in the first quadrant.

If the treasure is at (3,6) then how far do you need to move on the x-axis to reach this location? How far on the y-axis?

If the treasure is at (3,6) then how far do you need to move on the x-axis to reach this location? How far on the y-axis?
Which axis goes up and down?
The y-axis
Which axis goes side to side?
The x-axis
What do you call the point where the two axes cross?
The origin
What do x and y equal at the origin?
Zero
Which coordinate comes first, and which comes second?
x is first and y is second
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