Vocabulary
Name this operation: +
Addition
A variable whose value doesn't depend on the change of another variable is called a(n) _______
Independent variable
Find all real solutions to: m^2 - 5m - 14 = 0
m = -7, m = 2
The answer to a division problem is called the ______
Quotient
Mikey Mike noticed that his math grade goes up 4% for every 10 minutes extra he studies. What is the independent variable in this situation?
The amount of time he spends studying.
In a normal deck of 52 cards, what is the probability of selecting 2 Aces in a row? (no replacement)
1/221
or about 0.00452 (~0.45%)
A symbol that represents a number in math is called a _______
Variable
A function in the form of y = mx + b is called a _______ function.
Linear
What is Mr. Erik's home town?
Minot
Explain the difference between an integer and a whole number.
Whole numbers include: 0, 1, 2, 3...
Integers include: ...-3, -2, -1, 0, 1, 2, 3...
Mikey Mike noticed that the less time he spends playing videogames, the higher his grades become. That means there is a ________ association between time spent playing videogames and his grades.
Negative
All possible inputs for the 'x' variable in a function f(x) are called the function's _________
Domain
Give the definition of a rational number.
Any number that can be written in the form of:
integer / integer
What is a 'line of best fit' and what is its purpose?
A line of best fit is the line that best approximates the relationship between a set of data. Its purpose is to predict the expected values of other data points.
f(x) = - sqrt(x^2 + 4)
Give the domain and range for this function
Domain: (-inf, inf)
Range: (-inf, -2]