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Midterm Vocabulary
Vocabulary for the Midterm Exam
25
Mathematics
9th Grade
01/06/2012

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Cards

Term

The common zero point where the axes in the coordinate plane intersect.

Definition
Origin
Term

The four regions created by the interction of the x-axis and the y-axis in the coordinate plane.

Definition

Quadrants

Term
The equation y = 7x - 2 is an example of what form of the equation of a line?
Definition
Slope-intercept form
Term

The equation

(y - 3)= 2(x - 5) is an example of what form of the equation of a line?

Definition
Point-slope form
Term

 A relation where each element of the domain is paired with exactly one element of the range.

Definition
Function
Term

 

A number that can be written in the form a/b , where a and b are integers and b ≠ 0.

 

Definition
rational number
Term

 

A number and its opposite.

Definition
additive inverses
Term

The number of times a data item occurs in a set.

Definition
Frequency
Term

The term often used to describe sets of data because they represent a centralized or “middle” value.

Definition
measures of central  tendency
Term

All possible outcomes of an event.

Definition
Sample Space
Term

The outcomes for which the probabilities are equal.

Definition
Equally Likely
Term

The ratio that compares the number of ways an event can occur to the number of ways it cannot occur.

Definition
Odds
Term

One of two equal factors of a number.

Definition
Square Root
Term

A number that cannot be written in the form a/b where a and b are integers and b ≠ 0.

Definition

Irrational Number

Term
Perpendicular Lines have slopes that are__________ of each other.
Definition
Opposite Reciprocals
Term
Parallel lines have slopes that _____________.
Definition
are the same.
Term

5-1

 

What is the formula for slope?

Definition
[image]
Term

5-1

 

What is the slope of a vertical line?

Definition
Undefined
Term

5-1

 

What is the slope of a horizontal line?

Definition
zero
Term

5-4

 

What is the x-intercept?

Definition

Where the line crosses the 

x-axis. Where y = 0.

Term

5-4

 

What is the y-intercept?

Definition

Where the line crosses the

y-axis. Where x = 0.

Term

5-3

 

What is the slope-intercept form of the equation of a line?

Definition
y = mx + b
Term

5-4

 

What is the point-slope form of the equation of a line?

Definition

(y - y1)= m(x - x1)

where m= slope  and

(x1,y1) is any point on the line.

Term

5-3

 

   Given the equation

y = mx + b, which value is the slope and which value is the y-intercept?

Definition

m = slope

 

b = y-intercept

Term

6-6

How do you know which side to shade in a linear inequality?

y≥mx +b etc...

Definition
Choose a test point. If the inequality is true after you substitute the point, shade on the same side. If it is false, shade on the opposite side.
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