9.01 – HDW define the relationships between two variables on a graph

Do Now:Graph the following points: (4, 5)(-2, 3)(-3, -4)(3, -6)

Exam Missed

Who still needs to take it

Monday Tuesday Wednesday Thursday Friday

4

Review #8

5

Exam #8

6

Graphing Stories

7

Stacking Cups

8

Graphing Lines

11

Solve for Y and graph

Concept Quiz

12

HDW determine if a point is on a

line

13

HDW graph lines parallel to the x & Y axes

14

HDW determine the slope of a

line algebraically

15

NO SCHOOL PD Day

18

HDW write the equation of a line given two

points

19

HDW graph and write the

equations of parallel lines

Concept Quiz

20

Review #9

21

Exam #9

22

Functions

Goals of today

• Graph points

• Coordinate plane

• How do graphs tell a story

Drawing the C.P.a) Use a Rulerb) Label Axisc) Set scaled) Label Points

Points in the coordinate plane are indicated with ordered pairs (x,y)

Examples:

(4, 5)

(-2, 3)

(-3, -4)

(3, -6)

(0, 0)

Think: (↔, ↕)

The coordinate plane

Points in the coordinate plane are indicated with ordered pairs (x,y)

Examples:

(4, 5)

(-2, 3)

(-3, -4)

(3, -6)

(4,5)

(-2,3)

(-3, -4)

(3, -6)

The Four Quadrants

I

x

y

II

III IV

(+,+)(-,+)

(-,-) (+,-)

Graphing Stories

• Stairs One• Stairs two• Running• Distance from Home

Will probably just do two of them

Now let’s just talk not write

• Tell the story of each graph

Now Tell the Story

Scan here

Describe the Relationship between x and y.

Scan here

Describe the Relationship between x and y.

Scan here

Describe the Relationship between x and y.

Summary

• Positive Change(“increasing”)

• Negative change (“decreasing”)

• Zero Change

• Undefined Change

Oh Canada…

8. Homework – Bonus

Practice

Challenge

Where is the Earth’s x-axis? Where is the Earth’s y-axis?

Where is our school’s coordinate?

Where is the Earth’s x-axis? Where is the Earth’s y-axis?

Where is our school’s coordinate?