Variable
A letter used to take the place of an unknown number value.
Beth walks 3 miles each day. If t represents the total miles walked and d represents the number of days, which variable is the dependent and which is the independent?
t= dependent; d= independent
For every "P" pounds of chocolate a patisserie receives, they can make "C" cakes.
What is the input and what is the output?
pounds of chocolate: input
cakes: output
What is the pattern of the following chart?
Input: 2 3 4 10
Output: 8 9 10 16
What is the order of operations
(), Exp, Mul, D, A, S
Independent Variable
A variable whose value determines the value of another quantity
Jessie goes to the market once every three days. What would be the dependent variable and independent variable?
Dependent= number of trips
Independent= number of days
If the function is y = x - 2, complete the output given below.
Input: 1 2 3 4 10
Output: -1
0, 1, 2, 8
What is the pattern of the following chart?
Input: 20 21 22 60
Output: 4 4.2 4.4 12
Divide by 5
[3(12 - 5)+4]/5
5
Dependent Variable
A variable whose value of determined by the value of another quantity
Kara's gym membership includes a $15 start up fee and then is $40 a month. Which variable is the dependent and which is the independent?(Use t = total and m=months)
t: dependent
m: Months
If the function is y = 6x, complete the output given below.
Input: 2 3 4 5 11
Output: 12
18, 24, 30, 66
Input: 24 23 22
Output: 8 7.67 7.33
Division by 3
List all the operations and their inverses (opposites)
+-
-+
x/
/x
Expression (Hint: we went over this in the 1st Quarter)
A mathematical sentence. Not all expressions are equations.
Jordan pays a $4 shipping charge in addition to the price of a video game. Which variable is the dependent and which is the independent? (Use C= cost p= price of 1 video game)
c: dependent
p: independent
If the function is y = 25 - x, complete the output given below.
Input: 2 3 4 5 11
Output: 23
22, 21, 20, 14
Using the pattern from the chart below, how much would 15 pounds of coffee cost?
$36
Amy volunteers at an animal shelter. She worked 15 hours in March, 27 hours in April, 39 hours in May, and 51 hours in June. If the pattern continues how many hours will she work in December?
123 hours
True or false: x + 5 = 12 is an expression and an equation
True
The total cost (c) is the cost of games, $5, times the number of games (g) played plus the $3 entry fee (e). What variable(s) is the dependent and which are independent?
independent: entry fee, number of games
dependent: cost
If the function is y = 7x + 3, complete the output given below.
Input: 2 3 4 5 11
Output: 17
24, 31, 38, 80
Students are given the following chart:
Input: 1 2 3 8
Output: 8 11 14 29
If the pattern is y = 3x + 5, what is the value when the input is 25?
80
What is the pattern of the following chart?
Input: 2 3 4 10
Output: 4 9 16 100
Input squared