Lesson 10-1 Represent Rational Numbers on the Coordinate Plane

Open Ended

Why is it important to understand how to graph rational numbers on a coordinate plane?

Graphing

Plot the reflection of point A(3,5) across the x-axis.

Graphing

Plot the reflection of point A(3,5) across the y-axis.

Multiple Choice

Two points have the same x-coordinate but opposite y-coordinates.

Across which axis do they form mirror images of each other?

• x-axis

• y-axis

• origin

• diagonal

Multiple Choice

Two points have opposite x-coordinate but the same y-coordinates.

Across which axis do they form mirror images of each other?

• x-axis

• y-axis

• origin

• diagonal

Labelling

Label the following parts of the coordinate plane.

Drag labels to their correct position on the image

Quadrant I

Quadrant II

Quadrant III

Quadrant IV

Labelling

Label the following parts of the coordinate plane.

Drag labels to their correct position on the image

Origin

x-axis

y-axis

ordered pair

Labelling

Label the following parts of the coordinate plane.

Drag labels to their correct position on the image

(- , -)

(- , +)

(+ , +)

(+ , -)

Multiple Choice

What is the ordered pair for the origin on a coordinate plane?

• (0, 0)

• (1, 1)

• (-1, 0)

• (0, -1)

Open Ended

How do the signs of the coordinates relate to the quadrant in which a point is located? Explain for each of the four quadrants.

Multiple Choice

What are the coordinates of the location of the Jefferson Memorial on the map?

• (-1.25 , -0.75)

• (2 , 0.25)

• (0.5 , -0.75)

• (0.5 , -1.75)

Multiple Choice

On the map, what landmark is located at (2, 1/4)?

• FBI Building
• White House

• Lincoln Memorial

• Washington Monument

Multiple Select

Which of the following points are reflections of each other across the y-axis?

• N and M

• P and Q

• N and Q

• P and M

Fill in the Blank

The coordinates of point A are (−3, 5). What are the coordinates of point B, which is a reflection of point A across the x-axis?

(

-

,

-

)

Fill in the Blank

The coordinates of point A are (−3, 5). What are the coordinates of point B, which is a reflection of point A across the y-axis?

(

,

)