functions
What is a function
A function is a rule that assigns each input value to exactly one output value
What are real numbers
Real numbers include all rational and irrational numbers on the number line
What is a square number
A square number is the product of a number multiplied by itself
What is a scatterplot used for
A scatterplot is used to display the relationship between two sets of data
hat is a two-way table used for
A two-way table organizes data into categories based on two different variables
Is the following relation a function: (1, 2), (1, 3), (2, 4)
No, because the input value of 1 is associated with two different output values
Is 5 a rational number
es, because 5 can be expressed as a fraction 5/1.
Calculate the square root of 64
√64 = 8, since 8 * 8 = 64
If a scatterplot shows a positive correlation, what does that indicate
It indicates that as one variable increases, the other variable also increases
If a two-way table shows the number of girls and boys in each grade level, how many total cells are there for a school with grades 6, 7, and 8
6 cells 2 genders x 3 grade levels
Solve the function f(x) = 2x + 3 for x = 4
f(4) = 2*4 + 3 = 8 + 3 = 11
Express √9 as a real number.
√9 = 3, so √9 is a real number
The square root of 16 is this number
is 4
Draw a scatterplot with the points (1, 3), (2, 4), (3, 5), (4, 6)
You can sketch a simple scatterplot with the provided points on a graph paper and connect them with straight lines
fill in the missing value in the two-way table below
Grade 6 | Grade 7 | Grade 8
Girls 20 15 25 Boys 25 ? 20
20
This mathematical operation takes an input and gives a single output
function
This type of number can be written in decimal form and includes both rational and irrational numbers
real numbers
Find the square root of 100
√100 = 10, because 10 * 10 = 100
How can you determine the strength and direction of a relationship in a scatterplot
he strength and direction of a relationship in a scatterplot can be determined by the slope of the trend line
In a two-way table, what do the rows and columns represent
In a two way table the rows represent one variable and the columns represent another variable
What is the definition of a function in mathematics
A function is a relation between a set of inputs domain and a set of possible outputs range where each input is related to exactly one output
What is an irrational number
An irrational number is a real number that cannot be expressed as a ratio of integers, and its decimal representation is non repeating and non terminating
What is the square root of 144
The square root of 144 is 12
This type of graph is used to display the relationship between two sets of data.
scatterplot
This type of table shows the relationship between two variables and is often used in statistics.
two way table