Three coins are tossed. What is the possibility of tossing exactly one tail

Probability of getting at least 1 tail in 3 coin toss is 1−18=78

B

y =  is the equation of a horizontal line parallel to the x- axis.

A line perpendicular to it will be a vertical line parallel to the y- axis with equation

x = c

where c is the value of the x- coordinates the line passes through.

The line passes through (- 6, - 9 ) with equation

x = - 6 → B

Step-by-step explanation: