Coordinate Plane Graphing

Coordinate Plane Graphing

Horizontal Number Line

• Which end to the positive numbers lie?

• and the negative numbers?

Horizontal Number Lines

Positives count right

Negatives count left

Vertical Number Line

• Which end to the positive numbers lie?

• and the negative numbers?

Vertical Number Lines

Positives count up

Negatives count down

Now imagine overlapping a vertical and horizontal number line at the zeros

The Coordinate Plane

The horizontal number line is call the x-axis

The vertical number line is called the y-axis

The Coordinate Plane

• The number lines intersect at the origin, point (0, 0) 

• The graph is split into 4 sections call quadrants.

• Notes where quadrant 1, II, III, and IV are located.

• Time to show what you know...

Multiple Choice

The __ - axis is the horizontal axis of the coordinate plane.

• X

• Y

• Z

• None of the above

Multiple Choice

The __ - axis is vertical in the coordinate plane.

• X

• Y

• Z

• None of the above

Multiple Choice

The coordinates for the origin in the coordinate plane are________?

• (1,1)

• (0,0)

• (0,1)

• (1,0)

Multiple Choice

How many quadrants are in a coordinate plane?

• 1

• 2

• 3

• 4

How to plot a point

• Start your pencil at the origin

• Use the x-coordinate to decide how far left (if negative) or right (if positive) to move

• Use the y-coordinate to decide how far down (negative) or up (positive) to move

Let's take a quick video break

(if completing this on your own, find the video link in the materials folder for Topic 2 under this week)

Multiple Choice

(3, 4) is an example of...

• numbers in parenthesis

• an ordered pair

• labels

• fractions

Multiple Choice

When plotting points in a coordinate plane, which directions should you go first?

• left or right

• up or down

• left

• up

Multiple Choice

Give the coordinates for POINT B.

• (4, -2)

• (-3, 4)

• (4, -4)

• (4, -3)

Multiple Choice

Give the coordinates for POINT C.

• (4, -2)

• (-2, 4)

• (-2, -4)

• (4, 2)

Multiple Choice

Give the coordinates for POINT H.

• (-1, 2)

• (1, -2)

• (-1, -2)

• (1 , 2)

Multiple Choice

Give the coordinates for POINT I.

• (-2, 5)

• (-2, -5)

• (2, 5)

• (2, -5)

Multiple Choice

What is the ordered pair for point A?

• ( 2, 0)

• ( 0 , 2)

• (0, -2)

• (-2,0)

Multiple Choice

What point is at (-3,3)?

• F

• H

• J

• C

Multiple Choice

If you were to plot the point (4, -12) what would be the correct method?

• Up 4, left 12

• Right 4, up 12

• Down 4, left 12

• Right 4, down 12

Multiple Choice

In the ordered pair, (7, -7), first I would move ____ then ____.

• Left, Down

• Left, Up

• Right , Up

• Right , Down

Poll

Do you understand? Rate where you think you are...

• Awesome... I got this!

• I think I'm doing okay

• I may need a little help

• What just happened?! I'm totally lost!

How did you do?

I will post a link that you can use to run through this lesson again for practice if needed.