Students will review for the 6weeks exam.

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• Students will review for the 6-weeks exam.
• Put your name, date, and
  period on the paper.

Work! Study! Succeed! WOW!
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-3 ( x 2 ) gt 12
-3x 6 gt 12
6 6
-3x gt 18
-3 -3
x -6
lt
Which answer is less than -6 ?
ONLY -12
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What goes on the truck first?
Then, the men get in the truck.
Each man weighs 225 pounds
the 550 lb machine
lt 1400
Less than 1400 or equal to 1400. NOT MORE!
550
225 M
550 550
225 M lt 850
225
225
M lt 3.777
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Which number is less than or equal to 3.77?
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B f(x) 2x Is -8 2 ? -4 YES! Is -4 2 ?
-2 YES! Is 0 2 ? 0 YES! Is 4 2 ? 2 YES!
A f(x) x 4 Is -8 -4 4? YES! Is -4 -2
4? NO!
We do not need to check C or D.
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T
79 ? n ? 5
1000
OR
T 5 (79n) 1000
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(No Transcript)
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Put the numbers from least to greatest. 10
15
Put x in the middle x
lt lt
Since it is least to greatest, put Is less than
symbols.
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Slope is rise over run. Positive or
negative? Rise Run
?
?
1
?
-1
1
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List 1 ( 5, 2 ) ( 6, 1 ) ( 4, 3 ) ( 7, 0
) Are any x values the same? NO!
If the inputs are different, it is a function.
List 2 ( 6, 1 ) ( 7, 0 ) ( 5, 2 ) ( 6, 3
) Are any x values the same? Yes!
If the inputs are the same the output must also
be the same. List 2 is NOT a function.
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Domain means the input or x value. Put 0, 1,
2, and 3 in place of x in the part that says 3x
4.
x 3x 4 f(x)
0
3 0 4
4
1
3 1 4
7
2
3 2 4
10
3
3 3 4
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Write the RANGE or output in order least to
greatest
4, 7, 10, 13
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Draw arrows from each input to the output that
goes with it.
-6 4 9 10
-2 3 7
Is it a function? The input 7 has 2 outputs
4 and 9.
Put the output in the second oval in order from
least to greatest.
Put the input in the first oval in order from
least to greatest.
It is NOT a function!
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To determine if it is positive or negative, look
at the right end of the line.
G
J
F
H
UP
NOT up or down. Between pos. neg. ZERO
Straight up and down means Too steep to
measure Undefined
Down -
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gt 20
8.50
2.75 ? S
OR
2.75S 8.50 gt 20
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the number of motorcycles sold
the amount of the paycheck
Dependent Variable means the output or y
value. (Remember f(x) is a way to represent the
output or y value.) The equation is used to find
what? the amount of the paycheck
Independent Variable means the input or the x
value To calculate the paycheck you need to
input what? the number of motorcycle sold
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The outputs are different. NOT A FUNCTION!
The outputs are different. NOT A FUNCTION!
The outputs are different. NOT A FUNCTION!
ALL of the inputs are different so it IS A
FUNCTION!
A function must have a different output for each
input If the input is the same, the output must
also be the same.
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?
?
?
?
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Did the altitude decrease steadily (go
down) during this time?
Did the altitude increase (go up) during this
time?
YES!
NO!
FALSE
TRUE
TRUE!
Does the altitude stay the same during this time?
YES!
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STUDY!