C957 Applied Algebra exam with correct answers.

C957 Applied Algebra exam with correct
| | | | | |




answers

Dependent |variable |- |ANSWER-think |of |the |independent |variable |as |the |input |and |the |dependent |
variable |as |the |output. |Stated |another |way, |the |independent |variable's |input |influences |what |output, |
or |outcome, |you |get |from |the |dependent |variable.



independent |variable |- |ANSWER-Is |the |variable |that |explains, |influences, |or |affects |the |other |variable.
|The |independent |variable |is |put |on |the |x-axis, |or |horizontal |axis, |on |a |graph.




Quantitative |variables. |- |ANSWER-A |variable |that |is |measured |on |a |number |scale; |A |variable |with |a |
numeric |value.



Qualitative |variables |- |ANSWER-A |variable |that |is |not |numeric; |also, |called |a |categorical |variable. |A |
qualitative |variable |describes |data |that |fits |into |categories.



Functions |- |ANSWER-A |relation |based |on |a |set |of |inputs |and |a |set |of |possible |outputs |where |each |
input |is |related |to |exactly |one |output.



Inverse |function |- |ANSWER-Inverse |functions |are |basically |functions |that |"reverse" |each |other. |An |
inverse |function |swaps |the |input |and |output |variables.



independent |variable |and |dependent |variable |relationship |- |ANSWER-An |independent |variable |
explains |changes |in |the |dependent |variable, |while |a |dependent |variable |measures |the |changes.



rate |of |change |- |ANSWER--Rate |of |change |is |the |change |in |y-values |over |the |change |in |x-values.

-Rise |over |run



instantaneous |rate |of |change |- |ANSWER-The |rate |of |change |at |a |particular |moment, |as |opposed |to |
average |rate |of |change, |which |is |a |change |over |a |period |of |time.