Target: Locate and graph ordered pairs on a coordinate plane

1. In a bag full of marbles, there were 6 green, 2 red and 4 blue marbles. If a marble is chosen from the bag and then returned, find

a) P(green)

b) P(red)

c) P(blue)

d) P(not blue) 

2. The ratio of girls to boys in Mr. D’s class is 12 : 13. What is the ratio of girls to all students in Mr. D’s class?

3. Solve for y in the similar figures.

x-axis: ◦ The horizontal # line

y-axis: ◦ The vertical # line

Origin: ◦ where the two # lines cross each other

Quadrants: ◦ The 4 quarters: ◦ I, II, III, & IV

Ordered Pair:◦ Pair = 2◦ Order is x 1st then y … (x,y)

x - axis

y - axis

– 1

– 2

– 3

1

2

3

x - axis

y - axis

Origin

Quadrants

IV

III

III

Graph each point and name the quadrant where it is located.

a. A(4, 6)

Quadrant I

b. B(3, -2)

Quadrant IV

c. C(0, -8)

None, y-axis

d. D(-5, 7)

Quadrant II

A

B

C

D

4

6

Chose the letter with the given ordered pair.

a. (5, 0)

U

b. (-4, 6)

V

c. (-5, -2)

R

Chose the letter with the given ordered pair.

d. (8, -7)

T

e. (0, 3)

S

f. (0, 0)

P

Use the table of values listed to the right

a. Write the ordered pairs from the table using parentheses.

(-3, -6), (-2, -4), (-1, -2), (0, 0), (1, 2), (2, 4), (3, 6)

b. Graph the ordered pairs on a coordinate plane.

Based on your graph, if the x-coordinate is 6, what would the y-coordinate be?

(6, 12)

1. Write the ordered pair for each point on the graph at right.

a) A b) B c) C2. Write the ordered pairs for each point in the table.

Graph the points.

A

B

C

x y-2 -5-1 -30 -11 12 3

What are the similarities and differences between graphing the point (3, 7) and the point (-3, -7)?

The Coordinate Plane

Lesson 20

a. Make a scatter plot of the data. Label the x-axis “age” and the y-axis “height.”

b. Is there are relationship between the age of a person and the person’s height?

Yes, as the age increases so does the height.

c. Do you think this relationship will continue until someone is 70 years old? Explain.

No. People stop growing.