Upload
kita
View
41
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Most students will just find an answer by “eyeballing” it. Some will set up a proportion. After a while, ask if anyone did it w/o eyeballing it?? They will have used the equation! Make a big deal about this. Talk about why the proportion doesn’t work (it’s not proportional). - PowerPoint PPT Presentation
Citation preview
Write down this problem on yourCOMMUNICATOR
Predict y when x is 12.Predict w/table.Predict w/graph.Which is more accurate? Why?
x y2 43 64 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 LabPer Capita Income
% o
f peo
ple
with
a c
olle
ge d
egre
e
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
35y=25/4x+35
4
SPAGHETTI LAB WARM UP
Follow along.
2.
Prediction using table: _____
Prediction using LoB: _________
How close are they? _________
≈38 calls34.4 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