Scale Copies I
Scale Copies II
Proportional
Relationships I
Relationships I
Proportional Relationships II
Percents and Rates
100
What are the two requirements for a scaled copy?
1) ALL distances/sides must be multiplied by the same number.
2) ALL of the angles must stay the same.
100
What will happen to the shape when your scale factor is greater than 1?
Example: scale factor = 2
The scale copy will be enlarged (bigger)
100
Is this equation proportional? y= 3x
If so what is the constant of proportionality? (k)
Yes
k=3
100
No
100
What is 14% as a decimal?
0.14
200
Is this a scaled copy?
Yes, it is!!
200
What is the corresponding part to point A and Point B?
Point E corresponds to Point A
Point F corresponds to Point B
200
Find your constant of proportionality. Label it as "K=_"
K=13
200
what ordered pair is used for the origin?
(0,0)
200
What is 2/5 written as a percent?
40%
300
When creating a scale drawing, do you calculate and measure your new lengths then draw, or draw then measure and calculate your new lengths?
You must calculate and measure your new lengths, then you can draw those lengths to make your scaled drawing.
300
A scale drawing of a school bus has a scale of 1 inches to 7 feet. If the length of the school bus is 3 inches on the scale drawing, what is the actual length of the bus?
The actual length of the bus is 21 feet.
Reasoning: The scale factor is 7 because
1 *7 = 7 so 3*7 = 21
300
How can you tell if a graph is in a proportional relationship?
straight line through the origin or if y/x is constant
300
Sam took 8 hours to drive 272 miles. What was the unit rate in miles per hour?
34 mph
300
A stereo has a list price of $200, but is on sale for 10% off the list price. What is the sale price of the stereo?
$180
400
Which one is not a scaled copy? Be ready to explain why.
Copy 3 is not a scaled copy because every side was not multiplied by the same scale factor.
400
Rectangle A is 8 in by 2 in.
Select all of the measurements that would create scaled copies of Rectangle A.
A: 40 in by 10 in
B: 10 in by 2.5 in
C: 9 in by 3 in
D: 7 in by 1 in
E: 6.4 in by 1.6 in
Measurements A, B, and E.
400
Using this graph, What is the equation? 
y= 1/6x
400
Is this graph proportional? Write down two reasons for why or why not.
YES, because it is a straight line that touches our origin (0,0).
400
A salesperson gets a 5% commission on the sale of a copy machine. What is his commission on a copy machine that costs $3250.00? Draw a double number line to represent this situation before you solve.
$162.50
500
Find the scale factor
The scale factor is 1.5
500
There are two different scaled copies of a rectangle.
The scale of the first copy is 1cm = 10m.
The scale of the second copy is 1cm = 50m.
If the length of the rectangle is 15 cm on the first scale copy, how long will it be on the second?
The length on the second scaled copy would be 3cm.
Reasoning: On the first scale drawing ...
1cm = 10m so 15cm = 150m
That means on the second drawing
if 1cm = 50m then 150m would equal 3cm
500
Using this graph, What is the equation?
y= 1/6x
500
Paul drives to his friends house 250 miles in 5 hours. If this is drawn on a graph where y is miles and x is hours, then what is the ordered pair coordinates for if this data was graphed on a coordinate plane?
(5,250)
500
A sales tax of 7% was added to the $55.00 price of a pair of shoes. What was the total cost of the shoes?
Create a double number line AND a ratio table to represent this situation before you solve.
$58.85