Modeling Equations
Direct Variation
mixed
Dilations
rotations
100

  The model represents the equation 6

xx + 5 = 15. What is the first step in finding the value of xx?

                                      

                                       

a.
Subtract 5 circles from each side of the model


b.
Add 3 circles to each side of the model.
c.
Add 15 circles to each side of the model.
d.
Subtract 25 circles from each side of the mod

A.Subtract 5 circles from each side of the model.
100

If y varies directly as x, and x = 9 when y = 15, find y when x = 33

y=55
100
what is the rule for a reflection over the x axis 
x,-y
100
Which  one of this are an enlargement 

34,34    .67,.67    5/6 ,5/6  

12/9 ,12/9    18/23,18/23   2,2  

34,34    12/9,12/9    2,2
100
What is the rule for rotating 180 degrees?
-x,-y
200
7x3.5+5=24.5+5x

A.28.5

B.29.5

C.27

D.8

B.8



200

If c varies directly as the square root of d, and c = 14 when d = 64, find c when d = 324

c=70.875
200
what is the pre-image (4,5) if it is translated x+5,y-2
(9,3)
200
What is the order pair if the dilation is 53.67x and the order pair is 5.4,4.8
 289.818,257.616
200
What is the rule for rotating 270 degrees cw 
-y,x
300
The model represents the equation 5xx = -30. What is the value of xx?
a.
- 5
b.
35
c.
- 6
d.
6
c.
- 6
300

The cost of a pizza varies directly as the square of its radius. If a pizza with a 6 inch radius costs $8.00, how much should a pizza with an 11 inch radius cost?

cost=$14.66
300
what is the rule for 270 degrees clockwise 
-y,x
300
What is the dilation if the order pair is 23.45,18.43 and the dilation is 23
539.35,423.89
300
(true or false) 270 degrees ccw is the same as 90 degrees ccw
false
400
The model represents the equation 4nn = 8. What is the value of nn?
a.
3
b.
2
c.
4
d.
8


b.
2
400

If p varies directly as the cube of q, and p = 26 when q = 2, find p when q = 5

p=65
400
if the image is 5,6 what is the pre image if it is translated x+18,y~-9 (~=minus)
23,15
400
what is the dilation if the order pair is x,27 y,18 and the dilation is 14

a.252 ,378

b.378 ,252

c.37.8,252

d.252,378

b.378,252
400
what is the pre image when the image is 3,8 and it is rotated 90 ccw
-8,3
500
The model represents the equation 4xx + 2 = 2xx + 10. What is the value of xx

a.
4
b.
12
c.
8
d.
2
a.
4
500
The distance required to stop a car varies directly as the square of its speed.If 250ft are required to stop a car traveling 60 miles p/h how many ft are required to stop a car traveling 96 miles p/h
distance=400 feet
500
if the image is 5,4 what is the preimage if it is dilated by a scale factor of 7
35,28
500
What is the order pair if the pair is 234.3,425.8 and the dilation is 23.45
5494.335,9985.01
500
what is the rule for the rotations by 270 ccw and 180 degrees 
270 degrees ccw= y,-x and 180 =-x,-y 
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