Chapter 1-6 Algebra Vocabulary | Finals

1st semester finals vocab.

dependent variable

the variable in a function whose value depends on the value of the independent variable

scatter plot

two sets of data plotted as ordered pairs on a coordinate place

term

a number, a variable, or a product or quotient of numbers or variables

direct variation

an equation of the form y=kx, where k is not equal to zero

function

a relation in which each element of the domain is paired with exactly one element of the range

elimination

the use of addition or subtraction to eliminate a variable and solve a system of equations

compound inequality

two or more inequalities that are connected by the words "and" or "or"

linear equation

an equation whose graph is a straight line

domain

the set of the first numbers of the ordered pairs in a relation

half plane

the region of the graph of an inequality on one side of a boundary

independent variable

the variable in a function whose value is subject to choice

line of best fit

the line that most closely approximates the data in a scatter plot

slope-intercept form

y=mx+b, where m is the slope and b is the y-intercept of the line

proportion

when two ratios are equal

rate

the ratio of two measurements having different units of measure (e.g. $20/hr.)

system of equations

a set of equations with the same variables

substitution

the use of algebraic methods to find an exact solution to a system of equations

slope

the ratio of the change in y coordinates to the corresponding change in x coordinates

correlation coefficient

a value that shows how close data points are to a line

arithmetic sequence

the difference between successive terms of the sequence is constant

constant

a monomial that is a real number

range

the set of the second numbers of the ordered pairs in a relation

coefficient

the numerical factor of a term

standard form

an equation written in the form Ax+By=C

formula

an equation that states a rule for the relationship between certain quantities

like terms

contains the same variables, with corresponding variables having the same exponent

point slope form

An equation of the form y-y1=m(x-x1), where m is the slope and (x1, y1) is a given point on a non-vertical line.

system of inequalities

a set of two or more inequalities with the same variables