Transcript day three - sunnysidemath

Bellwork
Identify (write down) which
method is easiest to solve with,
then do so.
How can you tell which method
to use?
If the problem already has a letter
by itself, use _________
If the problem has two equations
where a letter will cancel out, use
________
Slope Review
y = -2x + 4
What is the name of the thing that tells you where to start a graph?
What is the letter that represents the y-intercept?
Where do you look in this equation to see where to start a graph?
Where do you look to see how far up and how far right to move?
What is the name of the thing that tells you how far up and to the
right to move?
What is the letter that represents the slope?
Check for solution
Is (1,-2) a solution of the linear equation 5x - 2y = 9?
Is (-9,-4) a solution of the linear equation x - 2y = -17?
Exponents (Ch. 7)
• Base
• Exponent
Foldable
1. Take out a piece of
notebook paper and
make a hot dog fold
over from the right
side over to the pink
line.
Foldable
2. Now, divide the right
hand section into 5
sections by drawing 4
evenly spaced lines.
3. Use scissors to cut
along your drawn line,
but ONLY to the crease!
The fold crease
Foldable
4. Write EXPONENTS
down the left hand side
The fold crease
Foldable
5. Fold over the top cut
section and write
MULTIPLYING
(SAME BASE) on the
outside.
6. Reopen the fold.
The fold crease
7. On the left hand
Foldable
( x )( x )  ( x  x)( x  x  x)
section, write an
x
example of multiplying
powers with the same
base.
2
5
8. On the right hand
side, write the rule for
multiplying exponents
1.
To multiply powers with the
same base, add the exponents.
2.
Remember…
3
same base - ADD
Multiplying example
( x )( x )  (__  __)(__  __ __)
2
3
x
Multiplying Rule
• To multiply powers with the same base, add
the exponents
• Remember, multiply…ADD the exponents
Dividing example
4
__ __ __ __ __

2
4
__ __
5
4
Dividing Rule
• To divide powers with the same base,
________ the exponents
• Remember, divide…SUBTRACT the
exponents
Power to a Power example
Power to a Power Rule
• To raise a power to a power, ___________
the exponents
• Remember, power to a
power…MULTIPLY the exponents
Zero Power Example
Zero Power Example
Zero Power Rule
Negative Power Example
Negative Power Rule
• A negative power means “_____” over.
• Or, take the _________, which means
switch the _______ and the _________
•
•
•
•
•
Multiplying
Dividing
Power to a power
Zero
Negative