write down this problem on your communicator predict y when x is 12. predict w/table. predict...

Write down this problem on your

COMMUNICATOR

Predict y when x is 12.Predict w/table.Predict w/graph.Which is more accurate? Why?

x y

2 4

3 6

4 7

Page XX of your INB

(12,16)

(12, 24)

ITEMS of BUSINESS

Last day to retake Ch 11 test is Thursday April 30. Must have practice test & rework done to retake.

Ch 16 test will be on Tues/Wed May 4/5.SAGE Test will be on May 14/15 & 18/19. BE HERE.

Questions on Homework?

Have your homework out on your desk.

RE- Try this CHALLENGE question:

Which is a better line of fit? Why?

The second line is closer to all points, not just a few.

BIVARIATE DATA

16.3 Spaghetti Lab

Per Capita Income

% o

f pe

ople

wit

h a

coll

ege

degr

ee

i-can predict how many marbles it takes to break XX pieces of spaghetti noodles.

My prediction is: ______How many it really took: _____

Get into your Groups

Pages XX of your INB

1.

Make a prediction using the table.

$250 means about _____ phone calls

Follow along.

2 ½ (15) = 37.5 phone calls

≈38

SPAGHETTI LAB WARM UP

Complete the graph.

Follow along.

SPAGHETTI LAB WARM UP

1.

SPAGHETTI LAB WARM UP

Follow along.

1.

SLOPE: __________

Y-INTERCEPT: __________

Line of Best Fit: __________

25

35

y=25/4x+35

4

SPAGHETTI LAB WARM UP

Follow along.

2.

Prediction using table: _____

Prediction using LoB: _________

How close are they? _________

≈38 calls

34.4 calls

y=25/4x+35250=25/4x+35

-35

off by 3.5

-35215 =25/4x÷25/4÷25/4

34.4 = x

SPAGHETTILAB

Day 1 – Integer operations, PEMDAS, evaluating16.3 Spaghetti Lab

i-can predict how many marbles it takes to break XX pieces of spaghetti noodles.

My prediction is: ______

How many it really took: _____

How close were you? ______

Worksheet16.3

SpaghettiLab