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algebra ch. 3

Linear Functions

QuestionAnswer
How do you know if two lines are parallel? They have the same slope.
When does the graph Ax+By=C make a line? When A and B are not 0.
What is the point-slope theorem? If a line contains(x1,y1) and has slope m, then it has equation y-y1=m(x-x1)
How do you find the nth term of an airthketic sequence? The nth term of An of an airthmetic sequence with first term a1 and constant differnce d is given by the expilcit formula An=a1+(n-1)d
What is the greatest integer less than or equal to x? [x]
What is a constant-increase situation? A situation in which a quantity y increases by a constant amount for every fixed increase in x.
What is a constant-decrease situation? A situation in which a quantity y decreases by a constant amount for every fixed increase in x.
What is standard form of an equation for a line? Ax+By=C
Created by: jsica