pre-algebra chapter 6 review powerpoint

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Are You Smarter
Than a
Fifth Grader?
1
Stay focused and
work out each
problem in your
notebooks
2
Copy problems into
your notebook and
SHOW ALL of your
work!!
3
The review is only as
good as you make
it…..so make it your
best!
4
Determine whether the relationship between
the two quantities described in each table is
linear or not AND explain why.
X
Y
1
18.0
2
19.6
3
21.2
4
22.8
Yes, they have the same common difference (+1.6)
5
The table below shows the average rate of
increase in a nurse’s salary over the past 20
years. Explain whether the growth in salary is
linear.
Year
1990
1995
2007
2012
Salary
$23,000
$27,500
$38,300
$42,800
Yes…all the rates of
change are the same
6
Find the slope of the line in the diagram below:
-1/10 = -0.1
7
Find the slope between
the points (5, 3) and (-2, 8)
-5/7 = 5/-7
8
What is the rate of change for the function shown below:


− =−


9
What is the rate of change for the function represented
In the table?
X
-2
-1
0
1
Y
-3
-1
1
3
a.-2
b.0
c.2
d.½
c
10
Jimbo Jones spent $46.50
on 3 T-shirts. The next time he
spent $31.00 on two T-shirts.
What is the cost for one T-shirt?
$15.50
11
State the slope and y-intercept for each equation:
Y = 5x – 1
y = 0.3x
3x + y = 6
Slope = 5
Slope = 0.3
Slope = -3
Y-int. = -1
Y-int. = 0
Y-int. = 6
12
Write an equation in slope-intercept
form for the graph shown:

=  − 

13
State the x-intercept and
y-intercept of the graph below:
X-int. = 6
Y-int. = -9
14
State the x- and y-intercepts of the
equation: 5x + 4y = -20, AND sketch
the graph using the intercepts
x-int. = -4
y-int. = -5
15
Monty has a total of
$290 in ten and five
dollar bills. This can be
represented by the
function 10x + 5y = 290.
Interpret the x- and yintercepts.
The x-intercept of 29 represents the number of $10 bills
There would be if there were zero $5 bills.
The y-intercept of 58 represents the number of $5 bills
There would be if there were zero $10 bills.
16
Solve the system of equations by graphing:
 = 3 + 4
 = − − 4
(-2, -2)
17
Julie has 81 pieces of jewelry.
She has twice as many earrings as she
has necklaces. Create and solve a system
of equations to find out how many earrings
And necklaces she has.
x + y = 81
Y = 2x
Solution: 27 necklaces, 54 earrings
18
Solve the following system of equations by substitution:
 = – 4
 = 2
X = -4 and Y = -8
19
Solve by substitution:
 = − + 
 +  = 
(x, y) = (4, -7)
20
What are you going to do to
prepare for the Chapter 6 Test?
a. Review my notes
b. Do homework problems over again
c. Study with my parents or friends
d. All of the above
e. wait until tonight and think about
studying
21
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