1. warm-up 2. inequalities 3....
TRANSCRIPT
2016 March 18 Alg.notebook
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March 21, 2016
1. Warm-up
2. Inequalities
3. Classwork
-up
Turn -in Word Problems
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The band is selling wrapping paper for a fundraiser.
Customers can buy rolls of plain wrapping paper and rolls of shiny wrapping paper.
The band sold a total of 55 rolls and made $950.
If a roll of plain costs $14 and a roll of shiny costs $20, how many rolls of each did they sell?
Warm-up - Complete on Paper
Just show your work - turn in
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Mar 1810:25 AM
P = plain wrapping paper
S = shiny wrapping paper Sold 55 Rolls
Made $950
Plain costs $14
Shiny cost $20
P+S=55
14P+20S=950
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Mar 1810:28 AM
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Mar 1810:35 AM
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A Adult TicketsC Children Tickets
A+C=21
6A+4C=105
C Chicken
S Steak
C+S=6
14.80C+17S=91
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H Hot Dog Pacs
B Hamburger Pacs
H+B=8
1.60H+5B=23
P Pizza Cost
B Breadstick Cost
3P+2B=29.50
2P+3B=23.00
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D daily Cost
M Cost Per Mile
6D+550M=337
3D+350D=185
H Hotel Cost per night
M = Cost of meal
2H+3M=195
3H+5M = 300
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S = Cost Sugar per Pound
F = Cost Flour per Pound
12S+15F= 9.30
4S+10F = 4.60
T Taco Price
E Enchilado
2T+2E=4.80
3T+E=4.00
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H Hotel Cost
B Baseball ticket cost
3H+2B=195
5H+4B=1135
B #Balcony Tickets
O # Orchestra Tickets
B+O=600
5B+10O=4750
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Mar 181:21 PM
#11 C Cotton Socks
W Wool Socks
C+W = 5
3C+5W = 19
12. L left handed gloves
R right handed gloves
R+L=12
48R +36L =
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Graphing Linear Inequalities and Linear Systems of equations
1. Understand the symbols
Greater than and Less than will be a
dotted line.
Greater than and equal to
Less than and equal to will be solid lines
2. Graph points like we did for normal lines
Slope intercept
Table of values
X and Y intercepts
3. Sketch the appropriate line
Linear Inequalites
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4. Linear inequalities have many solutions
indicated by shading a portion of the graph.
a. Pick an ordered pair as a test point.
(0,0) is usually the best choice
b. substitue the values into your equality
c. If statement is true then shade the space including (0,0)
If the statement is false shade the space that does not include (0,0).
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Less than requires a dotted line because
points on the line are not solutions to the inquality.
True so Shade where
(0,0) is included
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Sep 299:41 AM
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Less than and equal requires a solid line because
points on the line are solutions to the inquality.
True so Shade where
(0,0) is included
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Sep 299:41 AM
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Sep 299:41 AM
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Mar 182:37 PM
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Graphing Linear Inequalities and Linear Systems of equations
1. Understand the symbols
Greater than and Less than will be a
dotted line.
Greater than and equal to
Less than and equal to will be solid lines
2. Graph points like we did for normal lines
Slope intercept
Table of values
X and Y intercepts
3. When you have a system of linear inequalites you must Sketch 2 appropriate lines.
Systems Linear Inequalites
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4. Linear inequalities have many solutions
indicated by shading a portion of the graph.
a. Pick an ordered pair as a test point.
(0,0) is usually the best choice
b. substitue the values into your equality
c. If statement is true then shade the space including (0,0)
If the statement is false shade the space that does not include (0,0).
Complete this step for each inequality
Where the shading overlaps that's your solution.
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less than so the line is dotted
Substitute (0,0)
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Mar 182:46 PM
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greater than and equal so the line is solidSubstitute (0,0)
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Mar 182:58 PM
gt
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