Show that two lines with equal slopes and different y-intercepts have no point in common. Hint: Let y1 mx b1 and y2 mx b2 with . What equation must be true for there to be a point of intersection? Show that this leads to a contradiction.

Chapter6 6.1 Random Variables Random Variable: A numerical value assigned to outcomes. Probiblity Distribution: A model that describes a specific kind of process Discrete Random Variable: A random variable which has a countable number of possible outcomes (no decimals) WHEN DISCRIBING DISCRETE RANDOM VARIABLES A={HHT, HTH, THH} In 3 tosses of a coin 1)State the Variable X= count of heads in 3 tosses *X refers to Event A* 2)List all possible values of the variable X taken values= 0,1,2,3 X=0 {TTT} X=1 {HTT, THT, TTH} X=2 {HHT, HTH, THH} X=3 {HHH} 3)Determine the probibilitie