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algebra ch. 3
Linear Functions
Question | Answer |
---|---|
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 |