Algebra 1 final smester 1

Coefficient

A number multiplied by a variable

coordinate system

A method of framework for specifying the location of any point using a set of numbers

domain

The inputs for a function

function

A relationship between two variables were every input only has one output

independent variable

The variable that is changed on purpose

intercept

were a line crosses one of the areas on the graph

Like terms

Two or more terms with the same variables in the same exponents

Range

the outputs for a function

Variable

a letter representing an unknown value

Proportion

an equation that sets two ratios equal to each other

rate

comparison of two different quantities with different units, showing how much of one thing there is per unit of another

ratio

a comparison of two or more quantities, showing how much of one thing there is compared to another

linear equation

an equation that makes a straight line when graphed

rate of change

another word for slope

slope

the change in y compared to the change in x

Standard form

a way to write a linear equation - Ax+By=C

Parallel lines

two lines that do not intersect and they have the same slope

Perpendicular lines

Lines that intersect at a 90° angle and their slopes are opposite reciprocals

Point-slope

A way to write a linear equation Y-y=m(x-x)

slope intercept form

a way to write a linear equation y=mx+b

Consistent

when a system of equations has at least one solution

Dependent

two lines that are the same, they cross at every point

inconsistent

two lines that do NOT intersect (parallel lines, no solutions)

independent

two lines that cross at only one point

coordinate plane

a graph with an X-axis and a y-axis

system of equations

two or more equations considered together

reciprocal

when you flip the fraction

arithmetic sequence

A sequence that increases or decreases by the same amount between each number