Cheatography
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This is for the first unit in Algebra 1
Defining terms
ray 
part of a line that has one endpoint and extends indefinitely in one direction 
line segment 
a part of a line that has two endpoints and a specific length 
perpendicular lines 
lines that intersect to form right, or 90degree, angles 
parallel lines 
lines that lie in the same plane and do not intersect 
Undefined Geometric terms
Defining mathematical terms
Quantitative Reasoning
compare 
to explain or show the similarities or differences between items or ideas 
scenario 
an imagined or projected sequence of events 
constant 
a number or a variable whose value does not change 
quantity 
measurable attribute of a thing or event 
rate 
a ratio comparing quantities measured in different units 


Creating an Input/Output Table of Values
Introduction to Functions
range 
the set of output values corresponding to the domain values 
dependent variable 
the variable in a function that represents the output values; the second coordinate in the ordered pairs 
function 
a relation in which each element of the domain is mapped to (paired with) exactly one element of the range 
domain 
the set of input values for which the function is defined 
relation 
a set of ordered pairs 
independent variable 
the variable in a function that represents the input values; the first coordinate in the ordered pairs 
Continuous vs. Discrete Graphs
Writing and Graphing Equations in Two Variables
assume 
to accept as true without proof 
viable 
capable of working successfully; practical, realistic, usable, possible 
continuous graph 
a graph in the coordinate plane made up of connected ines or curves with no breaks 
coordinate plane 
a graph that has a finite number of data points 
ordered pair 
the pair of numbers, given in a specific order used to locate a point a coordinate plane 
Writing and Solving Equations in Two Variables


Creating an Input/Output Table of Values
Domain is xaxis, while Range is yxis
Is it a function? Do the vertical line test
Definitions
discrete graph 
a graph that has a finite or limited number of data points 
function notation 
a notation that traditionally replaces the dependent variable in a function with đť‘“đť‘“(đť‘Ąđť‘Ą), where đť‘“đť‘“represents the valueof the dependent variable at a given independent value, đť‘Ąđť‘Ą 
continuous graph 
a graph in the coordinate plane made up of connected lines or curves with no breaks 
Write a notation yourself

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