Freshman Pre Ap Algebra - Mid-term exam

What is the equation to calculate the point -slope form of a linear equation?

y = y1 = m( x - x1)

What is the equation to calculate the slope of the line given two points?

y2-y1/x2-x1

The horizontal axis in a coordinate plane is named what?

the x axis

How do you name the point of the y- intercept in an ordered pair?

(0, b)

In this equation what number indicates the y-intercept? y=3x+9

9

How do you determine the constant rate of change in an arithmetic sequence?

By adding or subtracting the difference between the first term and the next term.

The variable that does not rely on the other variable is called...?

Independent

How do you find the range of a set of data?

Subtract low number from high number

The mean of a set of data is ....

The average of the set of numbers.

The output of a function table is....

The dependent variable or y

A rate of change can also be called?....

The slope of the line

To identify the domain of a set of numbers you would....

Identify the x variable or independent variable.

How can you tell if a set of numbers is a negative relationship>

If the slope is negative or the line graphed goes from upper left to lower right.

Slope of the line indicates....

A change in x and y.

Name two items that indicate a linear function.

Graph creates a straight line and passes through the origin.

If a variable is not independent it is what?

Dependent

What does the y-intercept indicate?

Indicates an increase or decrease in the slope of the line.

What is the output in a linear equation?

It is the dependent variable or the y in the table.

What does it mean for a variable to be dependent?

It must have the independent variable in order to indicate the rate of change.

To calculate the median of a set of numbers you must...

Put the numbers in order from smallest to largest.

If you are given a scenario to read what should you do first?

Read all the way through and underline the information you would need mathematically.

Function Notation What does f(x) mean?

Same as Y Just plug in the number into x and simplify

The domain of a function table is ...

The independent variable.

What are variables in a linear equation?

The items that are bring compared

The mode of a set of data is....

The number that occurs most often.