Final answer:
The babysitter's hourly salary is $12 per hour, as represented by the coefficient of x in the linear equation y = 12x.
Step-by-step explanation:
The question pertains to the determination of the babysitter's hourly salary using the given linear equation y = 12x. The equation represents the relationship between the number of hours of babysitting (x) and the total pay (y) in dollars. To find the salary per hour for the babysitter, we look at the coefficient of x in the equation. The value of 12 that multiplies x is the rate at which the babysitter is paid per hour, or the hourly rate.