One hundred automobiles were lined up bumper-to-bumper. how many bumpers were actually touching each other?

198 bumpers touching each other.

50

Step-by-step explanation

if each car is connected to one bumper thats meaning that 2 bumpers are touching meaning that each two cars are touching so 100/2 equals 50

y = - 6

step-by-step explanation:

given the point (- 2, y) lies on the graph then it is a solution of it's equation.

substitute x = - 2 into the equation for value of y

y = 3(- 2) = 3 × - 2 = - 6

the point on the graph is (- 2, 6)