12/10/15 = PRECALCULUS……..…FOR WEEBLY…….…………..
Christ our Hope. Fill our hearts with your grace.
Help us to see how we are a part of all the people of the
world.
Help us to give to others in ways that meet their deepest
needs.
We await your coming with gratitude. Amen.
Here is the link to the Holt online graphing calculator:
https://go.hrw.com/math/midma/gradecontent/manipulatives/Grap
hCalc/graphCalc.html
Brain break = jump square p.12 
TURN IN HW while listening to our prayer song 
BE SURE TO TURN IN GLOG AND ERP GLOG WITH YOUR HW!!
Homework was:
HW = (1) do corrections for any wrong from last nite
38-42 SKIP
(2) ERP = EXAM REVIEW PACKET – #
39 … saw AND/OR explain … ON NOTEBOOK PAPER … do a good
job!! Look up and cite example for any you don’t know how to do
from memory!!!...ie…either you know how to do it by heart from
memory – or – you cite the example you found to help you…
HW Questions??  Prepare to do a problem at the board: +5 to your hw grade 
Today = ERP = EXAM REVIEW PACKET # 8-14
You must:
1. work on notebook paper not from a spiral
2. wtp = write the problem
3. saw to find the answer – look in (1) book --- look in index/glossary
to find out which lesson to look at!! If no work then explain!!
and (2) HW for help!!
4. write the answer you choose and the letter of that answer
5. skip a line
6. do 1-5 again…and again…and again…
ANSWERS TO 22-28
22.
skip 
23.
-5
24.
graph…
25.
a. 5, 25, 125, 625
26.
solve for x  x = ± 2
27.
graph – then you can see the answer = about 1.5 sec
28.
FOIL  x = 3/5 ; x = -4/5
 ACTIV BOARD FILE for work - on weebly!
Let’s make the file – everybody gets to do one 
23=tat
24=mic=board
25=will
26=harr=board
27=trav
28=kat=board
Hints for HW – SAW!!
29.
use quadratic formula  x = 3 ± √2
30.
square root both sides  x = (-3 ± 5) / 3
31.
use quadratic formula  x = (5 ± √33) / 4
32.
I = Prt  t = about 1.23
33.
skip
34.
skip
35.
solve for x then graph on number line…then write in
interval notation…
35.
[-12, ∞)
36.
skip
37.
what can the discriminant NOT be??It cannot be < 0 …
So set discriminant < 0 … What you get – it cannot be…So if x
cannot be < -4 then what can it be??
37.
the domain is x ≥ -4
HW ANSWERS – THESE WERE IN THE FILE LAST NIGHT!
38.
you try!! 4 parts 
c.
domain: -5 ≤ x < 4
d.
range:
39.
skip
40.
parent is … ???
41.
do f(x) – g(x) … CLT … clean up … simplify …
-5 ≤ y ≤ 5
Then what can the domain be…?any restrictions? No …
42…………………………….
38a. -2 = mic
38b. 5 = will
40.
parent  f(x) = x2  quadratic
41.
-x2 + x + 6  domain: all Real #s
42.
a. 8 ft/sec
b. 14 ft/sec
Never give up! Never surrender! ~ Galaxy Quest!
HW = (1) do corrections for any wrong from THE ENTIRE
PACKET = CORRECTIONS NEED TO BE ON NEW NBPAPER NOT ON
TOP OF ORIGINAL WORK – YOU SHOULD HAVE BEEN DOING
CORRECTIONS EACH NIGHT SO – TONIGHT YOU SHOULD
SHOULD ONLY HAVE TO DO CORR FOR 38-42 SKIP 39… saw
AND/OR explain … ON NOTEBOOK PAPER … do a good job!! Look up
and cite example for any you don’t know how to do from
memory!!!...ie…either you know how to do it by heart from memory –
or – you cite the example you found to help you…AND START OTHER
CORRECTIONS FOR ALL
to use online graphing to graph any you need to!
Try these:
http://www.webmath.com/plot.html
https://www.desmos.com/calculator
https://mathway.com/graph
https://www.wolframalpha.com/examples/PlottingAndGraphics.htm
l
http://www.intmath.com/functions-and-graphs/graphs-usingsvg.php
http://www.freemathhelp.com/equation-grapher.html
http://fooplot.com/#W3sidHlwZSI6MTAwMH1d