Functions+Characteristics

__//**-PF SL **//__ To test if the line is a function, do the vertical line test by taking an imaginary or real vertical line (a ruler, pencil, etc. will work if you need to) and going straight across the graph line (make sure your vertical line STAYS vertical.) If the graphed line only touches the vertical line once each time you move the vertical line, it's a function =] If it touches more than once at one time, it's not a function =[ PF CB
 * __//**Linear function: Highest power of x is one, and x is not inside any absolute value signs. **//__
 * __//**Quadratic function: X is not only to the first power, but is to a power greater than one at least once. **//__
 * __//**Absolute value function: The variable x is within the range of absolute value symbols. **//__