aim: what are double line graphs?

AIM:

What are Double Line Graphs?

REMEMBER WHEN

we had two plants

Plant 1 received Nitrogen Fertilizer

Plant 2 received none

Plant #1 has the fertilizerGrew to height of2 inches on day 24 inches on day 5

8 inches on day 1010 inches on day 1514 inches on day 20

Plant #2 has NO fertilizerGrew to height of2 inches on day 24 inches on day 5

7 inches on day 108 inches on day 159 inches on day 20

What is Predicting?

Which plant grew better?

How could we analyze our Data?

Would setting up a LINE GRAPH be useful in our analysis?

What do we do first?

Plant #1 Has fertilizer

Grew to height of2 inches on day 24 inches on day 58 inches on day 1010 inches on day 1514 inches on day 20

Plant 2 No fertilizer

Grew to height of2 inches on day 24 inches on day 5

7 inches on day 108 inches on day 159 inches on day 20

You make the data table!

Plant 1 Plant 2

2 2

4 4

8 7

10 8

14 9

Day of Growth

2

5

10

15

20

Table of Plant Days vs. Plant Height:

What is Predicting?

Lets GRAPH THIS!

Step ONE: Draw your Axis

Y-axis

X-axis

Step TWO: Label Your X Axis:

Y-axis

X-axis

Label the Days

Days

5 10 15 20 25`

Step Three: Now Label Your Y Axis:

Y-axis

X-axis

Plant Height

in inches 64

810

2

12

X-axisDays

5 10 15 20 25

`

1416

Step Four: Now Plot Your Points

Y-axis

X-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

Step FIVE: Now Draw Your Line

Y-axis

X-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

Step FIVE: Now Draw Your Line

Y-axis

X-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

Don’t forget to label your line!

Plant #1

WAIT!

What about plant #2?

Step FIVE: Now Draw Your Line

Y-axis

X-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

NOW REPEAT FOR PLANT #2 !!

Plant #1

PLANT #2: Plot your Points

Y-axis

X-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

Points for Plant #2

Plant #1

PLANT #2: Draw Your Line

Y-axis

X-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

Line for Plant #2

Plant #1

PLANT #2: Draw Your Line

Y-axis

X-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

Label Plant #2Plant #1

Plant #2

LASTLY: TITLE YOUR GRAPH

Y-axis

X-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

Plant Height for one Plant with Fertilizer, and One Plant Without

Plant #1

Plant #2

Alternative Title for the Graph

Y-axis

X-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

Days of Plant Growth vs. Plant Height for Two Plants

Plant #1

Plant #2

Alternative Title for the Graph

Y-axis

X-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

(X vs Y): Days of Growth Vs. Plant Height

Plant #1

Plant #2

What is Predicting?

Based upon YOUR graph

What would the plant height be of plant 2 on day 7

Plant 2 Height on Day 7?

Y-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

(X vs Y): Days of Growth Vs. Plant Height

Plant #1

Plant #2

6 inches

What is Predicting?

Based upon YOUR graph

What would be the plant height of plant 1 on day 14

Plant #1 Height on Day 14?

Y-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

(X vs Y): Days of Growth Vs. Plant Height

Plant #1

Plant #2

=10 inches

What is Predicting?

Based upon YOUR graph

What would be the plant height of plant #1 on day 23?

How did you figure that out?

Plant #1 Height on Day 23?

Y-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

(X vs Y): Days of Growth Vs. Plant Height

Plant #1

Plant #2

=16 inches

What is Predicting?

Interpolate

To estimate a value between two known values.

Y-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

(X vs Y): Days of Growth Vs. Plant Height

Plant #1

Plant #2

EXAMPLE of INTERPOLATION

What is Predicting?

Extrapolate

Mathematics. An estimated value which follows logically from the known values”

Y-axis

Plant Height

in inches 64

810

2

12

Days 5 10 15 20 25

`

1416

(X vs Y): Days of Growth Vs. Plant Height

Plant #1

Plant #2

Example of EXTRAPOLATION