Direct Variation
Inverse Variation
Lucky Dip 2
Lucky Dip
Set Operations
100
Which one is an example of direct Variation:
y = 5x OR -3x + 2y =0
First, Second, Both, or Neither
Both
100
If y varies inversely with x, write and equation.
x=9 and y=4
y=36/x
100
There are 28 goldfish in a tank. 11 have blue scales, 8 have orange scales, 5 are both blue and orange.
Find the number of goldfish who are neither blue or orange:
14
100
Write an equation that describes a van (V) getting 20mi/gal.
V(g)= 20g
100
If A and B are two sets such that A ∪ B has 400 elements. A has 320 elements and B has 175 elements.
How many elements does A ∩ B have?
A ∩ B = {95}
200
Find the missing variable of Direct Variation
(2,y) and (10,15)
y= 3
200
The cost of a $100 wedding gift is being split between multiple people.
Create a table when x: 3, 4, 5
y: 33.33, 25, 20
200
In a badminton club, 30 people play singles or doubles, of these 21 play singles and 6 play both singles and doubles. How many people play doubles?
15
200
Write an equation to calculate the cost (y) of buying tomatoes at $.78 per pound. Then tell me how much it would cost to buy 5 tomatoes.
y= .78x $3.90 to buy 5 tomatoes
200
aUc a= 9,10,13 c= 3,11,5
{3,5,9,10,13}
300
Find the missing variable of Direct Variation
(2/3, 2) and (x,6)
x=2
300
Find the missing variable in this inverse variation
(4,28) and (3, p)
p=37.33
300
A platform diving squad of 25 has 18 members who dive from 10m and 17 who dive from 5m. How many dive from both platforms? Assume all members dive from at least one of the platforms.
10
300
When building a Venn diagram, you should start with this region.
The innermost region (the middle intersection)
300
If n(A) = 34, n(B) = 50 and n(A ∩ B) = 30
Find n(A ∪ B):
n(A ∪ B) = 54
400
Does the data in this table represent that y varies directly with x? if it does write an equation.
x: 4, 5, 11
y: 3, 4.5, 13.5
Is not Direct Variation.
400
Find the missing variable in this inverse variation
(3/4,y) and (2/3,18)
y=16
400
Find the Constant:
x: 2, 8, 16
y: 9, 36, 72
k=4.5
400
Which elements are in the complement of the curved set?
X H T
400
What does this symbol represent: ξ
The universal set (everything)
500
The amount of simple interest earned in a savings account varies directly with the amount of money in the savings account. You have $1000 in your savings account and earn $30 in simple interest. How much interest would you earn if you had $1200 in your savings account.
You would earn $36 in simple interest.
500
Find the missing variable in this inverse variation.
(12.4,6.6) and (f,8.8)
f= 9.3
500
Find the Constant:
x: 0, 2, 4, 6
y: 3, 5, 7, 9
There is no constant, this is not direct or inverse variation.
500
The time, T, to travel a fixed distance varies inverselt with the rate, R, of travel.
If T=4 hr. and R=20 mi/hr. , find T when R=50 mi/hr.
T= 1.6 hr.
500
The symbols used to denote the complement of the union of set A and Set B.
What is (A U B ) '