Coordinate Grids

Coordinate Grids

What is a coordinate grid?

• A coordinate grid is used to locate points in a plane using an ordered pair of numbers

X and Y axis

The x-axis is a horizontal number line

( left and right )

The y-axis is a vertical number line

( up and down )

Multiple Choice

Can you identify point Z ?

• ( 2 , 5 )

• ( 4 , 2 )

• ( 5 , 2 )

• ( 2 , 3 )

The Origin

The point where the x and y axis intersect ( cross ) each other

The origin has the ordered pair (0,0)

Ordered Pair

A pair of numbers used to locate points on the grid.

ex: ( 2 , 3 )

The first number is always x.

The second number is always y.

Multiple Choice

What is the ordered pair of point T ?

• ( 4 , 2 )

• ( 2 , 5 )

• ( 6 , 6 )

• ( 2 , 3 )

How to plot an ordered pair!

• 1 > always begin at the origin (0,0)

• 2 > move left or right on the x-axis first

• 3 > move up or down on the y-axis second

Multiple Choice

What is the ordered pair of point L ?

• ( 4 , 2 )

• ( 2 , 5 )

• ( 5 , 2 )

• ( 2 , 3 )

Multiple Choice

How do you write an ordered pair ?

• ( Y , X )

• ( X , X )

• ( X , Y )

• ( Y , Y )

Multiple Choice

The point where the number lines intersect is called the ________ .

• coordinate

• origin

• quadrant

• ordered pair

Multiple Choice

The coordinates for the origin in the coordinate plane are________?

• ( 0 , 0 )

• ( 1 , 1 )

• ( 1 , 0 )

• ( 0 , 1 )

Multiple Choice

What is the ordered pair of point A ?

• ( 4 , 6 )

• ( 7 , 2 )

• ( 5 , 8 )

• ( 2 , 8 )

Multiple Choice

What is the ordered pair of point C ?

• ( 4 , 6 )

• ( 7 , 2 )

• ( 5 , 8 )

• ( 2 , 8 )

Multiple Choice

What is the ordered pair of point D ?

• ( 4 , 6 )

• ( 7 , 2 )

• ( 5 , 8 )

• ( 2 , 8 )

Multiple Choice

What is the ordered pair of point G ?

• ( 4 , 6 )

• ( 7 , 2 )

• ( 5 , 8 )

• ( 2 , 8 )

Multiple Choice

Finish the rectangle. What is the ordered pair for the missing coordinate?

• ( 4 , 2 )

• ( 4 , 3 )

• ( 5 , 3 )

• ( 5 , 6 )