Explain Coordinates on a Plane

a grid that makes it easy to locate points in a plane using an ordered pair of numbers

• first quadrant

• coordinate system

• brackets

• coordinate series

the first number in an ordered pair which names the distance to the right or left from the origin along the x-axis

• y-coordinate

• first quadrant

• coordinate grid

• x-coordinate

In an ordered pair the first number represents which axis?

• x

• y

• z

• w

Ordered pair (0,0) is also known as the ___.

• y-axis

• x-axis

• origin

• I love Math!

Points A, B, C, D, and E form a pentagon. Write an ordered pair that can be located inside the pentagon.

(​ (a)   , ​ (b)   )

• -0.5

• 1

• -1

• 2

• 0.5

What is the ordered pair of point E?

• (2,5)

• (5,2)

• (-5,2)

• (5,-2)

The coordinates (1,3), (4,6) and (7,9) fall on this line. What is another point that falls on the line?

• (0,0)

• (2,4)

• (5,3)

• (4,2)

In the ordered pair (4,9), which number is the y-coordinate?

• 4

• 9

• neither

• both

How do you write an ordered pair?

• (X,X)

• (Y,X)

• (X,Y)

• (Y,Y)

Which quadrant contains the point named by (2, 5)?

• Quadrant I

• Quadrant II

• Quadrant III

• Quadrant IV