2) How would you describe the direction of the association between the length of a flight and the cost of the flight?
a mix of positive and negative
neither positive nor negative
negative
positive

answer: 0+0=0

step-by-step explanation:

that is the only answer that can make 0

b) well because you get well

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.