Clep College Mathematics With Question And Answers Grade A+

Prime Number whole number that has only 2 factors (1 and itself) Composite Number whole number that has factors in addition to 1 and itself 0 & 1 Neither prime nor composite Even Numbers Composite (because they are all divisible by two) Numbers that end in 5 Composite (because they are all divisible by 5) Prime Numbers up to 20 2, 3, 5, 7, 11, 13, 17, 19 Interval Connected portion of the real line Closed Interval Filled in circles & [ ] Open Interval Open circles & ( ) Rational Number Number that can be written as a ratio/fraction Ex: 8 = 8/1 3/4 7,344/123,239 EVERY WHOLE NUMBER Irrational Number Number that can be written as a decimal but not a fraction Ex: pi= 3.141592... square root 2= 1.414213 Absolute Value distance from 0 |x| Ex: |3|=3 |-3|=3 never negative Factors Numbers you multiply to get another number Prime Factorization List of prime numbers that are factors of a number Ex: prime fac of 8 = 2X2X2 Take number and divide it by smallest prime that goes into it Relation Relationship between sets of information Domain set of all starting points; x Range set of all ending points; y All functions are _________ but not all ______ are functions. RELATIONS Well-behaved Function relation that has only one y when given one x Can't share None can not be matched * If you can draw a _______________ through two points it is NOT a function VERTICAL LINE Linear Function f(x)=x D: (-inf, inf) R: (-inf, inf) Diagonal Line Constant Function f(x)=c D: (-inf, inf) R: (y|y=c) Horizontal Line Quadratic Function f(x)=x^2 D: (-inf, inf) R: [0, inf) Smile/Increases Quickly Cubic Function f(x)=x^3 D: (-inf, inf) R: (-inf, inf) Mirror Half Quadratic Square Root Function f(x)=sq rt x D: [0, inf) R: [0, inf) Sideways Quadratic Absolute Value Function f(x) =|x| D: (-inf, inf) R: [0, inf) A V Graphing a Function CONTINUED......