December11 2012
Transcript of December11 2012
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2. Simplify: -3(5x - 3) -2(6x - 6)
4. Find the length
and width
5. Solve for b: A = ½b • h
3. Find the length & width:
2x + 10
x P = 68
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Vocabulary:
1. Discreet Data: Data that has a limited number of
values, with space between each value. Usually whole
numbers.
2. Continuous Data: Data with values that vary
continuously over the graph. Data that is unbroken by
space between values.
Examples:
1. The number of suitcases lost by an airline:
2. The growth of corn plants:
3. The number of ears of corn harvested.
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function
function
Not a function
Not a function
……….
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1a. Domain: {-4, -2, 3, 4} Range: {-2, 2, 1}
1b. Domain: {0, 1, 7} Range: {-6, 2, -4, 4}
2a. 2b.
3a. 3b.
Function Not a Function
0
1
7
-6
2
-4
4
-4
-2
3
4
-1
2
1
Not a
Function
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Function Rules f(x)..g(x)..h(x)
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……….
Function Rules f(x)..g(x)..h(x)
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y = -3x + 2
y = -3(-1) + 2
y = 3 + 2
y = 5
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H
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g
h
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H
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g
h
t
P
e
o
p
l
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A. Cost of a laptop, past 10 years B. Drag racing before hitting tree
C. World Population, last 700 years D. Person's height during lifetime
E. 3-point shot F. Running up, then down a hill
C
o
s
t
S
p
e
e
d
S
p
e
e
d
4 5 6
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The x variable is given on each graph. You will add the y
variable before watching the video. Please number your
graphs, matching the order of the video watched.
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An easy one to begin:
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Follow Closely:
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……….
y = 5x -7y = 5(-3) - 7y = -15 - 7y= -22
y = 5x -7y= 5(-2) -7y= -10 - 7y= -17
y = 5x - 7y = 5(4) - 7y= 20 - 7y= 13
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Practice
Steps
1. Sub in each domain value in one @ a time.
2. Solve for y in each
3. List y values in braces.
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y = 3x + 1
y = 3(-4) + 1
y = -12 + 1
y = -11
y = 3x + 1
y = 3(0) + 1
y = 0 + 1
y = 1
Ans. { -11, 1, 7}
y = 3x + 1
y = 3(2) + 1
y = 6 + 1
y = 7
y = -2x + 3
y = -2(-5) + 3
y = 10 + 3
y = 13
y = -2x + 3
y = -2(-2) + 3
y = 4 +3
y = 7
y = -2x + 3
y = -2(6) + 3
y = -12 +3
y = -9
1.
2.
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Using the Vertical Line Test
Use the vertical line test to check
if the relation is a function only if
the relation is already graphed.
1. Hold a straightedge (pen, ruler,
etc) vertical to your graph.
2. Drag the straightedge from left
to right on the graph.
3. If the straightedge intersects
the graph once in each spot ,
then it is a function.
4. If the straightedge intersects the
graph more than once in any
spot, it is not a function.
A function!
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