Proportional Relationships
What do I Check in order to see if a graph is proportional?
Straight line
Passing through the origin
Write 18% as a fraction in its simplest form
9/50
(-4)(7)(-3)
84
What is the mode of the data set below
76, 82, 65, 82, 93, 63, 45, 82, 90, 74
82
Name the expression for
8 more than 6 times a number x
6x + 8
Is this table proportional
x y
4 20
3 15
5 25
6 36
no
Convert this decimal to a percent
0.0652
6.52%
5-2^3 +4(-7+12)
17
Whats the range of the data set below
76, 82, 65, 82, 93, 63, 45, 82, 90, 74
48
Solve for the unknown variable
6g = 80.4
g = 13.4
What is the constant of proportionality in the equation below:
y = - 3.25x
- 3.25
If there are 80 children on a field trip and 30% brought lunch with them, how many children did not bring lunch?
56
(-3/5) divided by (3/11)
-11/5 or -2_1/5
What is the mean of the data set below:
76, 82, 65, 82, 93, 63, 45, 82, 90, 74
75.2
5 - 3(4x + 2 + 5x)
-27x -1
-1 - 27x
Jessica travels 41.13 miles in 3 hours on her bike. Create an equation that determines her constant speed where x is the number of hours and y is the total number of miles.
y = 13.71x
At a restaurant a bill came up to $132.50 including tax. The customer wants to tip 18%. What is the new total?
$156.35
WHich number has the largest absolute value
6, -3, 1, -9, 8.9, 8
-9
Given a bag of marbles containing 7 red 8 blue 4 green and 6 yellow marbles, what is the probability of pulling a yellow marble?
6/25
24%
.24
John went to the state fair. He paid a parking fee of $7.25 and then paid $1.25 per ride.
What equation represents this situation? (don't forget to label all variables used)
y=1.25x + 7.25
y= total dollars spent
x= number of rides
Create a scenario for the equation below
y = -2x
answers vary
see teacher
Katelynn has a 50 dollar bill. She tries to buy a hoodie that cost $60 but she has a coupon for 15% off. Does she have enough to pay for her shirt? Explain
NO, she needs $51 and only has $50
Express as the sum of two unlike terms
.5( 12x + 18 - 4x)
4x +9
Given 3 trip options (movies, aquarium, zoo), 2 transportation options ( bus or train) and 3 lunch options (McDonald's, Wendy's, chic fil a) What is the probability of choosing the the movies by train and eating chic fil a for lunch?
(1/3)(1/2)(1/3)=1/18
John went to the state fair and paid $7.25 for parking and another $1.25 per ride. If he wanted to spend at least $30, what is the minimum amount of rides he can go on? Create an inequality and solve.
1.25x +7.25 greater than or equal to 30
19 rides